Platypus, illustration
Exotic mammals, 19th century
Platypus, 19th Century illustration
Evolution of mammals, 19th Century illustration
Hippopotamus, 19th Century illustration
Frog, illustration
Toad in a wildlife garden, illustration
Mandrill, 19th Century illustration
Bactrian camel, 19th Century illustration
Horse, 19th Century illustration
Giraffe, 19th Century illustration
Donkey, 19th Century illustration
Bat, 19th Century illustration
Marmot and hedgehog, illustration
Leopard, 19th Century illustration
Water buffalo, 19th Century illustration
Spider monkey, 19th Century illustration
Llama, 19th Century illustration
Diana monkey, 19th Century illustration
Patas monkey, 19th Century illustration
Crested porcupine, illustration
Reindeer, 19th Century illustration
Orangutan, 19th Century illustration
Pangolin, 19th Century illustration
Indian rhinoceros, illustration
Armadillo, 19th Century illustration
Raining frogs, artwork
Giant brown frog with webbed feet, illustration
Batrachia frogs, 1904 illustration
Blind cave animals, illustration
Spinosaurus dinosaurs, illustration
Common toad, 19th century
Green frog and tree frog, 19th century
Salamander and snail, 19th century
European asp, 19th century
Tree frog watching a fly, 19th century illustration
Green tree frog on a branch, illustration
Red-shouldered hawk and prey, artwork
Beaver, illustration
Dog lymphatic system, illustration
Whale, illustration
Pig, illustration
Horse integumentary system, illustration
Horse nervous system, illustration
Banded rattlesnake, 19th century
Horned viper, illustration
Coral snake, 19th Century illustration
Cobra, 19th Century illustration
Monocled cobra, 19th century
Horned desert viper, 19th century
Lion, 19th Century illustration
Tiger, 19th Century illustration
Striped hyena, 19th Century illustration
Ostrich, 19th Century illustration
Crowned crane, 19th Century illustration
Great bustard, 19th Century illustration
Sandhill crane, 19th Century illustration
Pied wagtail on stone, illustration
Pied wagtail, illustration
Bullfinch perched on a blossoming branch, illustration
Coal tit perched on branch, illustration
Rhinoceros's foot, illustration
Sei whale's head, illustration
Facial expression of Beluga whale, illustration
Flamingo, conceptual illustration
King bird-of-paradise, 19th century illustration
Human, chimpanzee and cow skeletons, illustration
Shark, illustration
Red-winged parrot, illustration
Varied lorikeet, illustration
Turquoise parrot, illustration
Gouldian finch, illustration
Red fox, illustration
Two neanderthals and a woolly rhinoceros, illustration
Woolly rhinoceros, illustration
Woolly rhinoceroses, illustration
Two blue whales, illustration
Scutosaurus, illustration
Mastodonsaurus prehistoric amphibian, illustration
Cotylorhynchus synapsids, illustration
Sectioned frog heart, illustration
Salamander, 19th Century illustration
Greater siren, 19th Century illustration
Giant salamander, 19th century illustration
Amphibian egg, illustration
Dog spleen, illustration
Dog arteries, illustration
Dog veins, illustration
Dog heart, illustration
Dog liver, illustration
Sperm whale, illustration
Dolphin, illustration
Elephant, illustration
Elephant skeleton, illustration
American bison, 19th Century illustration
Golden jackal, 19th Century illustration
Domestic pig, 19th Century illustration
Polar bear, illustration
Sea creatures, illustration
Sea lion swimming in the shallows, illustration
Rabbit skeleton, illustration
Cheetah pivoting with its tail, illustration
Bobcat, illustration
Orcas hunting salmon, illustration
Ape and alien, illustration
Steller's sea cow, illustration
Quagga, illustration
Alpaca, 19th Century illustration
Indian tapir, 19th Century illustration
Silky anteaters, illustration
Giant anteater, 19th Century illustration
Greyhound, 19th Century illustration
Dachshund, 19th Century illustration
Ruffed lemur, 19th Century illustration
Domestic dog, 19th Century illustration
English mastiff, 19th Century illustration
Spotted hyena, 19th Century illustration
Leaf-nosed bat, 19th century
Common vampire bat, 19th century
Darwin's fox, 19th century
Jaguarundi, 19th century
Pampas cat, 19th century
Dusky dolphin, 19th century
South American rodents, 19th century
Long-haired grass mouse, 19th century
Waterhouse's swamp rat, 19th century
Brazilian marsh rat, 19th century
Bushbuck, 19th Century illustration