UDK5002602: Domestic Chicken, gallus gallus, side view of Hen with three Chicks (photo) / Bridgeman Images

UDK5001030: Sea Lemon, Archidoris pseudoargus, on rock (photo) / Bridgeman Images

UDK4991818: Head of Basset Hound (Canis familiaris) looking sideways with its tongue hanging out, front view (photo) / Bridgeman Images

UDK4991944: Spotted Salamander, black with bright yellow spots warning that it is poisonous, streamlined body and tail, long splayed toes for digging, crawling over mushrooms, side view (photo) / Bridgeman Images

UDK4992111: Hissing Cockroach, Gromphadorhina portentosa, with antennae extended, native to Central America, angled side view (photo) / Bridgeman Images

UDK5004845: Mouse in glass jar (photo) / Bridgeman Images

UDK5006025: Side view of a Broad-Ringed White-Eye, Zosterops poliogaster, perching on a branch pecking at yellow buds. The tapering wings are visible and the head is in profile just showing the large, white eye ring (photo) / Bridgeman Images

UDK5005248: Tawny Eagle (Aquila rapax) with its head turned to the side, close-up (photo) / Bridgeman Images

UDK5005251: 14-day-old African pygmy falcon chick (Polihierax semitorquatus), calling, side view (photo) / Bridgeman Images

UDK5005355: Sand Dollar, a flat, round sea urchin (photo) / Bridgeman Images

UDK5005388: Rear view of an Imperial eagle (Aquila heliaca) perched on a branch, looking over shoulder (photo) / Bridgeman Images

UDK5005886: Common Raven (Corvus corax) perching on branch, close-up (photo) / Bridgeman Images

UDK5005922: Side view of a White Helmet-Shrike, Prionops plumata, perching on a branch, with head seen in profile (photo) / Bridgeman Images

UDK5007021: Fluffy yellow chick (Gallus gallus) with open beak, side view (photo) / Bridgeman Images

UDK5007048: Head of Lesser spotted dogfish (Scyliorhinus canicula), profile (photo) / Bridgeman Images

UDK5007059: Grey wagtail (Motacilla cinerea) diving with old nest material in its beak, side view (photo) / Bridgeman Images

UDK5007098: Ornate moth (Utetheisa ornatrix), mounted female moth (photo) / Bridgeman Images

UDK5007252: American alligator (Alligator mississippiensis) in water, head above surface, side view (photo) / Bridgeman Images

UDK5007276: Grey one week old baby parrot (photo) / Bridgeman Images

UDK5007178: Red crossbill (Loxia curvirostra), bird perching on a branch (photo) / Bridgeman Images

UDK5007196: Cuttlefish in water (photo) / Bridgeman Images

UDK5007266: Jardine's Parrot (Poicephalus gulielmi fantiensis) on a branch and looking to one side (photo) / Bridgeman Images

UDK5007286: Bat in flight - front view showing face and long ears Plecotus austriacus (Long-eared bat). Family Vespertilionidae (photo) / Bridgeman Images

UDK5007296: Common vole (Microtus arvalis) on a rock, side view (photo) / Bridgeman Images

UDK5006760: St. Vincent Amazon Parrot (Green Phase) perching on branch (photo) / Bridgeman Images

UDK5006827: Side view of a Red-Crested Turaco, Tauraco erythrolophus, perching on a branch, with its head turned under its wing as it preens, showing the bright red, dense crest of fine feathers on the head, green breast feathers and darker wing and body plumage (photo) / Bridgeman Images

UDK5006848: Sunbittern (Eurypyga helias) standing with bill open (photo) / Bridgeman Images

UDK5006873: Side/overhead view of a Common Ringed Plover with head in profile, showing the orange bill, white neck ring with black plumage underneath, brown wings, the white underside just visible, and long legs for running (photo) / Bridgeman Images

UDK5006886: Side view of a Greater Necklaced Laughing-Thrush with head in profile, perching on a tree stump, neck lowered, showing the black moustache streak near the eye, rufous collar, short, rounded wings, black necklace, thick legs and large feet (photo) / Bridgeman Images

UDK5006902: American black bear cub (Ursus americanus) standing upright, arms in the air (photo) / Bridgeman Images

UDK5006903: American black bear cub (Ursus americanus), side view (photo) / Bridgeman Images

UDK5006937: Green wood hoopoe (Phoeniculus purpureus), perched on a branch, displaying its long red bill and long tail feathers (photo) / Bridgeman Images

UDK5006948: Seahorse (Hippocampus guttulatus) with tail curled around a plant (photo) / Bridgeman Images

UDK5006962: Two Common shrimp (Crangon crangon) in a glass tank (photo) / Bridgeman Images

UDK5007317: Vampire bat (Desmodus rotundus) on ground on all fours with open mouth (photo) / Bridgeman Images

UDK5007319: Brown bear (Ursus arctos) walking (photo) / Bridgeman Images