#separator:tab #html:false #tags column:4 Mammals Warm-blooded animals with hair or fur that feed their babies milk animal-classes-facts Birds Warm-blooded animals with feathers, wings and beaks that lay eggs animal-classes-facts Reptiles Cold-blooded animals with dry scaly skin animal-classes-facts Amphibians Animals that start life in water and often live on land as adults animal-classes-facts Fish Cold-blooded animals with gills and fins that live in water animal-classes-facts Insects Animals with six legs and three body parts animal-classes-facts Arachnids Animals with eight legs, like spiders animal-classes-facts Crustaceans Animals with a hard shell and many legs, like crabs animal-classes-facts Mollusks Soft-bodied animals often with shells, like snails animal-classes-facts Vertebrate An animal with a backbone animal-classes-facts Invertebrate An animal without a backbone animal-classes-facts Warm-blooded Keeps a steady body temperature animal-classes-facts Cold-blooded Body temperature changes with the surroundings animal-classes-facts Is a bat a bird or a mammal? A mammal animal-classes-facts Is a whale a fish or a mammal? A mammal animal-classes-facts Is a dolphin a fish or a mammal? A mammal animal-classes-facts Is a penguin a bird? Yes, a flightless bird animal-classes-facts Is a frog a reptile or an amphibian? An amphibian animal-classes-facts Is a snake a reptile or an amphibian? A reptile animal-classes-facts Is a spider an insect? No; it's an arachnid with eight legs animal-classes-facts Is a shark a mammal or a fish? A fish animal-classes-facts Is a platypus a mammal that lays eggs? Yes animal-classes-facts Which mammals lay eggs? Monotremes: the platypus and echidnas animal-classes-facts Which mammals have pouches? Marsupials, like kangaroos and koalas animal-classes-facts Largest animal on Earth The blue whale animal-classes-facts Largest land animal The African elephant animal-classes-facts Tallest animal The giraffe animal-classes-facts Fastest land animal The cheetah animal-classes-facts Fastest bird in a dive The peregrine falcon animal-classes-facts Largest bird alive The ostrich animal-classes-facts Smallest bird The bee hummingbird animal-classes-facts Largest reptile The saltwater crocodile animal-classes-facts Largest fish The whale shark animal-classes-facts Largest living cat The tiger animal-classes-facts Largest land carnivore The polar bear animal-classes-facts Slowest mammal The sloth animal-classes-facts Longest living land animal The Galapagos giant tortoise, over 100 years animal-classes-facts Largest rodent The capybara animal-classes-facts Largest primate The gorilla animal-classes-facts Only mammal that can truly fly The bat animal-classes-facts Which animal has the largest eyes? The giant squid animal-classes-facts How many legs does an insect have? Six animal-classes-facts How many legs does a spider have? Eight animal-classes-facts How many legs does a crab have? Ten animal-classes-facts How many arms does an octopus have? Eight animal-classes-facts Insect body parts Head, thorax and abdomen animal-classes-facts Metamorphosis A big change in body form as an animal grows animal-classes-facts Complete metamorphosis Egg, larva, pupa, adult animal-classes-facts Incomplete metamorphosis Egg, nymph, adult animal-classes-facts Butterfly life cycle Egg, caterpillar, chrysalis, butterfly animal-classes-facts Frog life cycle Egg, tadpole, froglet, adult frog animal-classes-facts Exoskeleton A hard outer covering that supports and protects the body animal-classes-facts Molting Shedding an old outer layer animal-classes-facts Herd animals Cattle, zebras and elephants live in herds animal-classes-facts Pack animals Wolves and wild dogs hunt in packs animal-classes-facts Predator An animal that hunts others animal-classes-facts Prey An animal that is hunted animal-classes-facts Scavenger Eats dead animals it did not kill, like vultures animal-classes-facts Vultures help by Cleaning up dead animals animal-classes-facts Marine mammal A mammal that lives in the sea, like seals and whales animal-classes-facts Endangered animal A species in danger of dying out animal-classes-facts Extinct animal A species that has died out animal-classes-facts Dodo A flightless bird from Mauritius that went extinct in the 1600s animal-classes-facts