What animals exist?

It's impossible to list all the animals that exist! There are millions of species, and new ones are being discovered all the time.

But I can give you some categories of animals:

Kingdom Animalia:

* Vertebrates: Animals with a backbone.

* Mammals: Warm-blooded, have fur or hair, and give birth to live young. Examples: dogs, cats, humans, whales, bats.

* Birds: Warm-blooded, have feathers, and lay eggs. Examples: eagles, penguins, robins, ostriches.

* Reptiles: Cold-blooded, have scales, and lay eggs. Examples: snakes, lizards, turtles, crocodiles.

* Amphibians: Cold-blooded, have smooth, moist skin, and lay eggs in water. Examples: frogs, toads, salamanders.

* Fish: Cold-blooded, have gills, and lay eggs. Examples: sharks, tuna, goldfish, seahorses.

* Invertebrates: Animals without a backbone.

* Arthropods: Have a hard exoskeleton and jointed legs. Examples: insects, spiders, crabs, lobsters.

* Mollusks: Have a soft body and a shell. Examples: snails, clams, oysters, squid.

* Annelids: Have segmented bodies. Examples: earthworms, leeches.

* Echinoderms: Have radial symmetry and spiny skin. Examples: starfish, sea urchins, sea cucumbers.

* Cnidarians: Have stinging cells. Examples: jellyfish, corals, sea anemones.

* Poriferans: Sponges, simple animals that filter water for food.

Other ways to categorize animals:

* Habitat: Where they live (e.g., forest animals, ocean animals, desert animals).

* Diet: What they eat (e.g., herbivores, carnivores, omnivores).

* Size: Large, medium, small.

* Behavior: Social, solitary, migratory.

To learn more about specific animals, try searching for them online or visiting a library or museum. You can also explore websites like the National Geographic website or the Animal Diversity Web.