Men who beat their wives are the lowest species of cowards.

Studying lower species is, at least, less fraught with political touchiness.

A race dedicated to evolution of what they see as lower species, no matter what the cost.

Are they to be treated as lower species and used as we see fit?

"This is a lower species," she said, indicating the dog.

Whatever the cause, it killed all but a few of the hardier lower species of plants and animals.

So, human is the lowest species in this diagram.

He argues that species higher in the food chain are less important than lower species.

Then he added, 'But only special teams,' as if that made him a lower species of being.

The dumb concern of one lower species for another?