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