All mammals give birth live young.
Examples of mammals includes:
- Humans
- Cats
- Dogs
- Cows
- Horses
- Elephants
Reptiles
Some reptiles give birth to live young, while others lay eggs.
Examples of reptiles that give birth to live young include:
- Some species of snakes
- Some species of lizards
Examples of reptiles that lay eggs include:
- Turtles
- Crocodiles
- Alligators
Amphibians
Amphibians lay their eggs in water, and the eggs hatch into tadpoles.
Examples of amphibians include:
- Frogs
- Toads
- Salamanders
- Newts
Fish
Most fish lay eggs in water, and the eggs hatch into fry.
Examples of fish that lay eggs include:
- Salmon
- Trout
- Bass
- Bluegill
- Catfish
Birds
All birds lay eggs.
Examples of birds include:
- Eagles
- Hawks
- Owls
- Falcons
- Chickens
- Ducks
- Geese
- Turkeys