References and classification notes for 319 researched species in the photo catalog; 300 currently have an enabled full-body photograph. Collection expanded and research reviewed on November 6, 2026; historical taxonomy and source limitations are noted per species. These broad filters help you discover animals; they are not a complete ecological or taxonomic database.
How the filters are defined
Habitat: broad environments a species regularly uses. Multiple labels can apply. Urban & farmland includes human-modified settings.
Diet: common adult diet. Insect-eaters are carnivores; mixed plant and animal diets are omnivorous. Detritivores eat organic debris. Non-feeding adults are listed separately instead of inheriting their larval diet.
Size: small under 10 cm; medium from 10 cm to under 1 m; large from 1 m. We use adult head–body length for land mammals, body length rather than wingspan for birds, and total length for reptiles and fish. Invertebrates use body length or the documented shell/bell diameter, with exceptions in species notes. Ranges that cross a threshold can appear in multiple bands.
Region: native wild ranges, including migration; Central America and Greenland count as North America. Introduced populations are generally excluded. Domestic distributions and uncertain origins are identified in species notes. World oceans is a marine range label, not a continent.
Evidence: source pages below support each species record. Tags summarize those accounts; they are editorial mappings rather than direct quotations. Historic taxonomy, source discrepancies and uncertainty are retained in the notes. Uncertain fields match only when that filter group is left unrestricted.
Africa, Asia, Europe, North America, South America, Oceania
This catalog entry is a domestic donkey. Regions describe established domestic distribution; they are not a claim of native wild donkey range. Habitats include human-managed grazing settings.
The catalog uses an outdated/incorrect genus combination; the source account identifies the humpback whale as Megaptera novaeangliae. World-ocean range is represented by Oceans; Antarctic waters are explicitly documented.
Africa, Asia, Europe, North America, South America, Oceania
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Adult source length range 80–150 cm crosses the 100 cm boundary. Mixed animal/algal food is treated as omnivory. Excludes erroneous/unspecified South American records from an older ADW account.
Subantarctic breeding islands are not mainland Antarctica; the broad ocean filter covers Southern Ocean range. ADW adult length 85–95 cm is below the 100 cm boundary.
Native Northern Hemisphere range is used; introduced Southern Hemisphere populations are excluded. Adult body length 50–65 cm is distinguished from wingspan.
Africa, Asia, Europe, North America, South America, Oceania
Domestic chicken: inhabited-continent distribution is domestic, not a claim of native wild status. ADW source describes ancestor Gallus gallus; breed-dependent adult size/habitat needs domestic-specific refinement.
Adult green turtles are primarily herbivorous; juveniles are more omnivorous. Region is world oceans, rather than inferring a continental range from nesting beaches.
Adult length approximately 85–100 cm and larger animals reaches both medium and large bins. Mainly animal diet; occasional plant food does not change the principal carnivore classification.
Uses adult total length, including the tail. The historic Chinese giant salamander complex contains several recently recognized species; this record follows the catalog name rather than assigning all modern Chinese species the same range.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Zooplankton and small animals are animal food, so a filter-feeding shark is not classified as a herbivore. Oceans denotes its circumglobal tropical marine range.
Classified from the account narrative and FishBase animal-prey diet, not the inconsistent herbivore label in the older ADW account. Oceans denotes its temperate and tropical marine range.
Includes resident rainbow trout and anadromous steelhead habitats. Regions exclude worldwide introduced populations. Typical adults are medium; documented adults can exceed 1 m.
Native South American mainland and Caribbean populations are grouped geographically as South America and North America; introduced mosquito-control and aquarium populations are excluded.
Adult body length is approximately 3.2 cm in the cited measurement study; the much larger wingspan is not substituted. Native Americas only; later overseas populations are not treated as the original range.
Adult coconut crabs are terrestrial on tropical coasts and coastal forests; larvae develop at sea. Size uses carapace length (approximately 5–20 cm), not the 1 m leg span.
MBARI research supersedes older speculative carnivory in ADW: the main diet is marine snow (detritus), with some small zooplankton. Size excludes the long retractile feeding filaments.
Size uses adult arm-tip diameter (usually 25–35 cm), not the much smaller central disc. Older Indo-Pacific records refer to a species complex; use Oceans without assigning every historic record to the narrowly defined species.
Size refers to mantle/body scale rather than fully extended arms. Older worldwide records include cryptic species; Europe and Africa reflect the eastern Atlantic/Mediterranean core range, not the older Japanese record.
The cited ADW account uses the older name Achatina fulica. Native East African range only; introduced populations elsewhere are excluded. Size refers to the adult shell/body, not a juvenile.
Rock-crevice species in wooded mountain/outcrop landscapes. Diet includes seasonally significant plant food; E. s. saxatilis diet is incompletely known, whereas E. s. intermedia omnivory is documented.
Klauber (1945), p.183 records an adult male with 58.5 mm head-body and 53 mm regenerated tail: 111.5 mm total. This supports a medium adult specimen, not a complete population range. Wild diet remains unverified: the author-published ReptTraits v1-2 row has Diet=NA and no diet source. diets is deliberately unknown, rather than copied from related species.
Museum/government rainforest range and body size support medium; feeding evidence includes direct captive arthropod-feeding observations, not a quantified wild diet.
Modern AMNH range is restricted to the Russian Far East and adjacent northeastern North Korea, not all older East Asian records. Size uses total adult length (head-body plus tail) from Poyarkov et al. 2012; the species natural-history account on pp. 36–37 reports a diet of aquatic and mainly terrestrial insects and millipedes.
FishBase lists worms, crustaceans and insects; adult diet is treated as carnivorous despite an older ADW omnivore description. FishBase regards an old 90 cm claim as erroneous; documented maximum is about 37 cm standard length.
A terrestrial coastal insect above the high-tide line; Ocean is used for the coastal category, not to imply that adults live submerged. Size excludes antennae and tail bristles. Original northern European range only.
The native origin is uncertain and disputed in the 2024 taxonomic revision, so regions is deliberately empty. Present cosmopolitan indoor occurrences are not substituted for a proven native range.
Adults have non-functional mouthparts and do not feed; larval algae/detritus feeding is not substituted for adult diet. Size excludes long tail bristles; freshwater/wetland tags describe breeding sites and adult riverbank surroundings.
Adults have non-functional mouthparts and do not feed; larval algae/detritus feeding is not substituted for adult diet. Size excludes long tail bristles; freshwater/wetland tags describe breeding sites and adult riverbank surroundings.
Native Mediterranean range only; introduced western North American populations are excluded. Herbal/algal and detrital feeding is supported by the ecology review; exact habitats are simplified from ground galleries under stones and logs.
Adult mayflies do not feed; larval grazing is not presented as an adult diet. The origin of North American populations is debated in the cited primary literature, so North America is conservatively omitted.
Adults have non-functional mouthparts and do not feed; larval algae/detritus feeding is not substituted for adult diet. Size excludes long tail bristles; freshwater/wetland tags describe breeding sites and adult riverbank surroundings.
Sandy shores and riverbanks are included under Ocean/coast and wetlands. The recording scheme explicitly supports native central/southern Europe; records outside that range may be native or introduced and are not treated as a complete original-range map.
Size is 13–16 mm, cross-checked with Michigan State University; the older ADW centimetre value is a unit error. Asia reflects the supported ancestral origin rather than present worldwide indoor distribution.
Adults feed on algae, detritus and small organisms and migrate between coastal, estuarine and lower freshwater habitats. Ocean/coast includes brackish estuaries.
ADW reports occurrence in Europe, Central Asia and North America but does not establish native versus introduced origin. Native-region tags are deliberately left uncertain. Adult total length is 3–7 mm; this blood-feeding parasite is classified as carnivorous.
Body size excludes legs. Broad habitat and dietary tags simplify documented field records and the woodland nutrition study; the species complex and geographic forms vary.
Body size excludes the approximately 5 cm leg span. Omnivory includes small invertebrates plus scavenged plant/fungal material. Introduced New Zealand populations are not included.
Size excludes pedipalps. Synanthropic cosmopolitan distribution is not a precise reconstructed original range; Europe and North America are documented core/type-locality and native-record regions, with other origins unresolved.
Size uses test diameter excluding spines: commonly 50 mm and occasionally 100 mm, crossing the 10 cm threshold. Native marine range is the Pacific coast from Alaska to Mexico.
Size uses the documented 3–5 cm test diameter, excluding spines. Algae and other attached organisms are mapped to omnivore. Region is the western Atlantic marine range.
Size uses the adult bell diameter (10–35 cm), excluding tentacles. Historical worldwide moon-jelly records contain a species complex, so only Oceans is assigned as a broad region.
Uses North America including Central America for the native raccoon range; old ADW wording extends into northern South America where current Procyon taxonomy requires caution.
European/western Asian badgers are intended, excluding Japanese and other eastern Asian species. The Mammal Society reports body lengths up to 100 cm, so the threshold is shared by medium and large.
Region describes the inferred native Eurasian range; worldwide human-assisted introductions are excluded. Adult head-body length is 65–95 mm, excluding the tail.
The Mammalian Species account reports head-body lengths 61–106 cm, excluding the tail, crossing the 100 cm threshold. Reported adult body-length range spans the 100 cm boundary, so both medium and large filters apply.
Cat Specialist Group body length 59–100 cm includes the boundary at 100 cm; many other accounts give an upper bound of 92 cm. Reported adult body-length range spans the 100 cm boundary, so both medium and large filters apply.
African golden wolves are excluded from the golden jackal range following the 2015 genomic species split; some older accounts retain the African range.
San Diego Zoo gives whole-body/head-trunk length 70–80 cm; standing height is not used as body length. Diet is mostly fruit, but the account documents invertebrates and vertebrates; the omnivore label describes the mixture rather than equal animal/plant proportions.
Cat Specialist Group head-body length 45–65 cm is used; the ADW range-length maximum contains a unit/data-entry error. Sunda leopard cats are not intended by this entry.
The Wildlife Trusts reports body length 70–100 cm; the 100 cm endpoint belongs to the large bin while smaller adults belong to medium. Reported adult body-length range spans the 100 cm boundary, so both medium and large filters apply.
Elk/wapiti is treated separately from Cervus elaphus; native regions are Asia and North America, not the full range of older combined red-deer accounts.
Wild goat, not domestic goat. Wild native range and habitat are checked against IUCN. The published species-size comparison reports adult total length around 150 cm; this is well above the 100 cm bin boundary even after excluding the short tail. The ADW domestic-goat account supplies related ecological context only.
Uses Western Barn Owl Tyto alba after the 2024 species split: Europe, Africa and western Asia. Excludes the Americas (Tyto furcata) and eastern Asia/Australasia (Tyto javanica), despite the older broad ADW account.
Adult reported lengths 86–212 cm include the male train; medium/large retain sexual differences. Native Asian range is used, excluding captive/introduced records and misleading Congo wording in an older account.
Uses Natrix natrix, distinct from British Natrix helvetica. Adult male 60–70 cm and female 80–100 cm; the documented range crosses the 100 cm boundary.
Catalog scientificName is misspelled: correct taxon is Emys orbicularis. Identified by stable id and common name. ADW shell length 12–38 cm is the size measure for this turtle.
European native range is used conservatively; older ADW North African and Middle Eastern records include populations now assigned to other fire-salamander species.
Adult body lengths of approximately 8–13 cm span small and medium. Native region tags are broad continental groupings rather than every historic member of the common-toad complex.
Adult total length is commonly 6–10 cm; published adults can be approximately 11 cm, so both small and medium apply. Includes terrestrial habitats and freshwater breeding sites.
Native European/Asian range is taken from FishBase rather than treating its introduced worldwide distribution as native. Adult lengths commonly 30–60 cm but documented larger individuals cross 1 m.
Freshwater and ocean habitats reflect the catadromous life cycle. The core feeding stages are carnivorous; reproductive migrants stop feeding. Sargasso spawning waters are grouped as Oceans, not a North American terrestrial range.
The catalog follows the broad Holarctic burbot treatment; some sources separate North American/eastern Siberian populations as Lota maculosa. Typical adults are medium, with larger adults exceeding 1 m.
The older ADW account predates separation of E. voltai and E. varii; the broad habitat tags and South American region remain valid, while no precise modern basin-wide range is claimed.
Wild native range and feeding on insect larvae/zooplankton follow FishBase; worldwide aquarium trade is not treated as a native range. Cultivated long-finned varieties are not used to define body size.
Adult nectar, sap and fruit feeding is treated as herbivory; occasional animal-derived supplementary fluids do not change the main diet category. Size refers to body, not wingspan; introduced New Zealand populations are excluded.
Adult sap feeding is herbivory; wood-feeding larvae are a different life stage. Adult length remains below 10 cm; the larger 11 cm larval length is not used.
North America, South America, Europe, Asia, Africa
Adult body length is approximately 2.1 cm in the cited measurement study; wingspan values are not substituted. This highly migratory butterfly has a broad wild range.
Body size excludes the 6–9 cm wingspan. North African/Iberian populations assigned by modern sources to Iphiclides feisthamelii are excluded from the region tags.
Size uses total body length, not carapace length; adults around 8 cm and larger individuals above 10 cm span small/medium. Native Europe only; introduced western Asian/North African populations are excluded.
The usual adult length is about 50 cm, so size is medium; exceptional maximum-size claims are not used as typical size. Marine Biological Association BIOTIC describes omnivory and scavenging.
Adult sap/fruit feeding is herbivory. Size refers to the body, not wingspan. Broad native Holarctic range excludes occasional vagrants beyond the core range.
Adult body length is approximately 7.6–7.8 cm, not the larger wingspan. Adults prey on insects; freshwater habitat denotes the breeding/larval environment and associated adult foraging sites.
Size uses total body length (normally 18–20 cm), not carapace length; diet is mainly crustaceans and other marine invertebrates. Oceans includes its northeast Atlantic/Mediterranean seabed range.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Europe, Asia, Africa, Oceania, North America, South America
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Europe, Asia, Africa, Oceania, North America, South America
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Europe, Asia, North America, South America, Antarctica, World oceans
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
ADW reports inconsistent body-length and wingspan ranges. Adult size is deliberately left uncertain rather than treating possible wingspan values as body length. The American tropical coastal range includes breeding populations in both North and South America.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Europe, Asia, Africa, North America, South America
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Europe, Asia, Africa, North America, South America
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
The cited ADW account describes North American populations; the region tag reflects that account and is not a complete global range. Bill-to-tail length is described as just under 1 m, while the account also gives a rounded 1 m average.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.
Tags summarize the cited species account. Adult size uses body length, not wingspan; migration is included in region tags and introduced populations are excluded.