The receptors also reach their final pattern only in mature animals, as might be expected with a pheromone governing sexual behavior.

The young stallions are not exhibited in the same equipment as the more mature animals.

On the other, he said, more mature animals might be taking extra care because they are more likely to reproduce.

This is a mature animal seeking a spawning ground.

The young grow quickly, and mature animals fatten well.

I suppose it was because this was a very mature animal that he received the adult version.

They may be dangerous due to their body mass as a mature animal can weigh more than three tonnes.

The expression continues to be relatively high even in mature animals, however, suggesting that it is associated with not only formation but maintenance as well.

This was the mature animal, or was it merely adolescent?

She is usually one of the more mature animals, responsible for the overall safety of the herd, familiar with the terrain and resources available.