Animals
Articles about animal species, behavior and classification.
Terror birds
Terror birds (Phorusrhacidae): flightless predatory birds of South America
Tetrigidae
Tetrigidae — pygmy grasshoppers, groundhoppers, and grouse locusts
Tettigoniidae
Tettigoniidae — katydids and bush‑crickets (long‑horned orthopterans)
Texas coral snake
Texas coral snake (Micrurus tener)
Texas toad
Texas toad (Anaxyrus speciosus): appearance, habitat, and behavior
Thalassodromeus
Thalassodromeus — large crested pterosaur from Brazil
Thalassomedon
Thalassomedon — a long‑necked plesiosaur of the Cretaceous seas
Thaliacea
Thelyphonida
Thelyphonida (whip scorpions or vinegaroons): biology, behavior, and facts
Therapsid
Therapsids: early synapsids ancestral to mammals
Theria
Theria — the live‑bearing subclass of mammals
Theridiidae
Theridiidae — the tangle‑web or comb‑footed spiders
Therizinosaur
Therizinosaur: the unusual clawed theropods adapted for herbivory
Therizinosaurus
Therizinosaurus — the giant clawed maniraptoran of the Late Cretaceous
Therocephalia
Therocephalia — extinct theriodonts bridging non-mammalian synapsids and mammals
Theropod
Theropod: bipedal saurischian dinosaurs and the evolutionary lineage of birds
Thescelosaurus
Thescelosaurus: a late Cretaceous herbivore of North America
Thomson's gazelle
Thorny devil
Thorny devil (Moloch horridus)
Thoroughbred
Thoroughbred (horse breed)
Thread snake
Threat display
Thrush nightingale
Thrush nightingale (Luscinia luscinia)
Thylacine
Thylacine (Tasmanian tiger): biology, history and extinction
Thylacinidae
Thylacinidae (the thylacine family)
Thylacinus
Thylacinus — genus of carnivorous marsupials (thylacines)
Thylacinus potens
Thylacinus potens — an extinct large thylacine from Australia
Thylacosmilus
Thylacosmilus: extinct South American sabre-toothed metatherian (Miocene–Pliocene)
Thyreophora
Thyreophora: the shield-bearing (armoured) dinosaurs
Tianyuraptor
Tianyuraptor — Early Cretaceous dromaeosaurid from Liaoning, China
Tibetan antelope
Tibetan antelope (chiru) — high‑altitude antelope of the Tibetan Plateau
Tibetan fox
Tibetan fox (Vulpes ferrilata)
Tiger
Tiger (Panthera tigris): overview, traits, range and conservation
Large solitary big cat native to Asia. Covers appearance, behavior, historic range and modern conservation challenges, plus cultural importance and differences from other big cats.
Tiger beetle
Tiger beetle — fast, colorful predatory beetles
Tiger keelback
Tiger keelback (Rhabdophis tigrinus) — overview and natural history
Tiger quoll
Tiger quoll (spotted‑tail quoll) — mainland Australia's largest carnivorous marsupial
Tiger salamander
Tiger salamander (Ambystoma tigrinum): overview and conservation
Tiger snake
Tiger snake (Notechis scutatus): description, behavior, and medical importance
Tigger
Tigon
Tigon (hybrid of tiger father and lioness mother)
Tigrosa
Tigrosa — a genus of wolf spiders
Tigrosa helluo
Tigrosa helluo — a North American wolf spider
Tiktaalik
Tiktaalik: a Devonian 'fishapod' bridging fish and early tetrapods
Tilapia
Tilikum (orca)
Tiliqua scincoides
Tiliqua scincoides — Eastern blue‑tongued skink
Timber rattlesnake
Timema
Timema: small, basal stick insects of western North America