ecosystem # 生態系
biosphere # 生物圏
biodiversity # 生物多様性
natural environment # 自然環境
life cycle
- animals
a panda
an elephant
a rat
a dog
a rabbit
a cat
a tiger
a lion
a bird
a bear
an octopus
a kangaroo
a giraffe
a horse
a monkey
a sheep
a parrot
an antelope
a hippopotamus
a zebra
a deer
a mouse
a squirrel
a goat
a hamster
a chinchilla
a guinea pig
a leopard
a bat
a hedgehog
a ferret
a raccoon
a platypus
a fox
a wolf
a coyote
a mole
a mink
a gopher
a skunk
a porcupine
a duck
an opossum
a beaver
a cow
a pig

- birds
an owl
a chicken
a swallow
a goose
A young goose is called a gosling.
a falcon
a hawk
a vulture
a peacock
a flamingo

- reptiles
a lizard
a chameleon
a snake
a tortoise
a crocodile
an alligator
a turtle

You can see a lot of livestock in the countryside.
Do you know what livestock are, like cows and sheep?