Prehistoric mammals, Prehistoric animals, Animal size comparison Acrocanthosaurus, Argentinosaurus, Brachiosaurus, Brontosaurus, Camel, Cattle, Compsognathus, Deer, Deinonychus, Dog, Elephant, Emu, Gallimimus, Giraffe, Goat, Hippo, Horse, Hyena, Lemur, Lion, Mamenchisaurus, Ostrich, Oviraptor, Paraceratherium, Polar Bear, Quetzalcoatlus, Rhino, Shantungosaurus, Spinosaurus, Squirrel, Stegosaurus, Triceratops, Tyrannosaurus © 2021 G's Data Lab