whale
whales
tooth
teeth
knife
knives
giraffe
giraffes
person
people
strawberry
strawberries
wolf
wolves
horse
horses
foot
feet
goose
geese
crocodile
crocodiles
kangaroo
kangaroos
lion
lions
parent
parents
grandparent
grandparents
leaf
leaves
hippo
hippos
child
children
deer
deer
penguin
penguins
fish
fish
boy
boys
sheep
sheep
mouse
mice