Animals

Articles about animal species, behavior and classification.

Articles in this category: 2824 Updated: April 29, 2026 Page 53 / 59

Swan

Swan (waterfowl)

Swarm

Swarm (collective animal grouping behavior)

Swift

Swift (bird): aerial specialist of the family Apodidae

Swordfish

Swordfish (Xiphias gladius): biology, fisheries, and notable facts

Sylvacaecilia

Sylvacaecilia — the Aleku (Ethiopian) caecilian

Symphyla

Symphyla: small, soil-dwelling myriapods

Synonym (taxonomy)

Taxonomic synonyms: meaning, types, and importance in biological nomenclature

Syrian hamster

Syrian hamster (Mesocricetus auratus) — overview, care, and history

Tabby cat

Tabby cat: coat patterns, origins, and common varieties

Tachinidae

Tadpole

Tail

Tail (animal): structure, function, and evolution

Taipan

Taipan (Oxyuranus) — large venomous snakes of Australasia

Takin

Takin (Budorcas taxicolor): The Himalayan goat-antelope

Talarurus

Talarurus — armored ankylosaur from the Late Cretaceous of Mongolia

Tamaraw

Tamaraw (Mindoro dwarf buffalo)

Tammar wallaby

Tammar wallaby (Macropus eugenii)

Tangvayosaurus

Tanycolagreus

Tanycolagreus — small coelurosaur theropod of the Late Jurassic

Tanystropheus

Tapaculo

Tapir

Tarantula

Tarantula: large, hairy spiders of the Theraphosidae family

Tarantula hawk

Tarantula hawk (Pepsis and Hemipepsis spider wasps)

Tarbosaurus

Tarbosaurus

Tarbosaurus — Asian Late Cretaceous tyrannosaurid

Large Late Cretaceous tyrannosaurid from Mongolia and China, noted for its robust skull, powerful bite, and role as a top predator in riverine floodplain ecosystems; studied for it

Tardigrade

Tardigrade (water bear): microscopic, resilient eight-legged animals

Taricha

Tarsal formula

Tarsier

Tarsier: small nocturnal primates of Southeast Asia

Tasmanian devil

Tasmanian devil (Sarcophilus harrisii)

Tawny owl

Tawny Owl (Strix aluco): description, behaviour and distribution

Taxis

Taxis (directed movement of organisms toward or away from stimuli)

Teinolophos

Teinolophos: an early Cretaceous monotreme from Australia

Teleost

Teleosts: diversity, evolution, anatomy, and human importance

Telmatosaurus

Telmatosaurus (marsh lizard)

Temnodontosaurus

Temnodontosaurus — large Early Jurassic ichthyosaur

Temnospondyl

Temnospondyls: an overview of a diverse early amphibian group

Tenontosaurus

Tenontosaurus (Early Cretaceous ornithopod)

Tenrec

Tenrec

Tenrec: a diverse family of Malagasy and African mammals

Tenrecs are a varied group of mammals (family Tenrecidae) native mainly to Madagascar, showing remarkable convergent forms, unique anatomy, and close ties to other afrotherian mamm

Tentaculata

Tentaculata — the tentacled comb jellies

Tenualosa ilisha

Tenualosa ilisha (hilsa): biology, cultural importance, and management

Teratorn

Teratorns — giant prehistoric birds of the Americas

Tergum

Tergum — dorsal plate of an arthropod segment

Termite

Tern

Tern — slender seabirds: appearance, behavior, and conservation

Terrapin

Terrapin (small brackish- and freshwater turtles)

Terrestrial animal

Terrier