If animals lay many small eggs (and most do), then the young stages cannot live the life the adults lead.

The animal lay down, rolled over on its side, and closed its eyes.

Another dead animal lay before them, this one picked to the bone.

The animals lay in a group by themselves, a little distance from the others.

The animal lay flattened on the floor with its mouth open.

And yet this animal had laid hands on him with intent to kill.

The animals lay plenty of eggs, and they were all the researcher had hoped they'd be.

Other animals do not keep the zygote in their bodies, but lay an egg.

There was a last savage gasp and the animal lay still on the ground.

The animal lay there panting, looking around with bright eyes.