Animals

Sawfish

Sawfish (Pristidae): anatomy, ecology, and conservation

Sawfish are large, ray-like cartilaginous fishes with a toothed rostrum. This article summarizes their anatomy, behaviour, habitat, distribution, life history and conservation conc

Sawfly

Sawfly (suborder Symphyta) — plant-feeding hymenopterans

Scale (zoology)

Scale insect

Scalloped hammerhead

Scalloped hammerhead (Sphyrna lewini)

Scaphognathus

Scaphopoda

Scapula

Scapula (shoulder blade)

Scarlet macaw

Scarlet macaw (Ara macao) — large red parrot of the Neotropics

Scarlet tanager

Scarlet Tanager (Piranga olivacea)

Scarlet tiger moth

Scarlet tiger moth (Callimorpha dominula)

Scelidosaurus

Scelidosaurus — an early armoured herbivorous dinosaur

Schnauzer

Schnauzer — German dog breed: Miniature, Standard and Giant overview

Schomburgk's deer

Schomburgk's deer — an extinct lowland deer of Thailand

Scimitar oryx

Scimitar oryx (Oryx dammah): description, habitat, and conservation

Scipionyx

Scipionyx — exceptionally preserved Cretaceous theropod from Italy

Scissor-tailed flycatcher

Scissor-tailed flycatcher (Tyrannus forficatus)

Scorpion

Scottish Fold

Scottish Fold: the folded‑ear cat breed

Scottish Terrier

Scottish Terrier (Aberdeen Terrier)

Screech owl

Screech owl (Megascops): small nocturnal owls of the Americas

Scutellosaurus

Scutellosaurus — a small early armoured dinosaur

Scyphozoa

Scyphozoa — the true jellyfish

Sea anemone

Sea anemone — biology, ecology, and natural history

Sea bass

Sea bass — common name for several marine and estuarine fishes

Sea cucumber

Sea Cucumber: biology, ecology, uses and conservation

Sea devil

Sea eagle

Sea lion

Sea lion — eared marine mammals of the Otariidae family

Sea otter

Sea otter (Enhydra lutris): appearance, behavior, and conservation

Sea slug

Sea slug: overview, groups, adaptations, and ecological role

Sea snail

Sea snail — marine gastropod overview, biology, and significance

Sea snake

Sea snake (marine elapid)

Sea spider

Sea spider (Pycnogonida)

Sea turtle

Sea urchin

Seabird

Seahorse

Seasonal breeder

Seasonal breeder (animal reproduction)

Secretarybird

Segisaurus

Segnosaurus

Segnosaurus: the slow-lizard therizinosaur of the Late Cretaceous

Sei whale

Selous' zebra

Selous' zebra (Equus quagga borensis)

Semiaquatic

Semiaquatic: organisms that divide life between water and land

Senegal bushbaby

Serum amyloid A

Serum amyloid A (SAA): acute‑phase protein, functions, and clinical importance

Serval

Serval (Leptailurus serval)