1. a lion
a monkey
a giraffe
a crocodile
a snake
a butterfly
a zebra
an elephant
a horse
a cat
a dog
a shark
a dolphin
a spider
a mouse
a camel
a kangaroo
a goldfish
a swan
a frog
a panda
a polar bear
a bee
a chicken
a hippo
a tortoise
a tiger
a parrot
a duck
a penguin

2. is faster than
is slower than
is bigger than
is smaller than
is taller than
is shorter than
is longer than
is stronger than
is fatter than
is thinner than
is happier than
is sadder than
is friendlier than
is more dangerous than
is more beautiful than