Drag the words over the center of the appropriate image. If it is
an animal with wings, place it over the picture of the sky. If it is an
animal without wings place it on the ground. If it's right the background will
turn a color, otherwise it will stay where you dropped it.
la vaca
el caballo
el pato
el párajo
la oveja
el ganso
la mosca
el cerdo
la gallina
la rana
cow
horse
duck
bird
sheep
goose
fly
pig
hen
frog