Wholly freshwater galaxias species are gravely threatened by exotic salmonid species, particularly exotic trout species, which prey heavily upon galaxias and compete with them for food.

Prairie dogs feature only as supplemental prey for breeding Golden Eagles but wintering eagles reportedly prey heavily on colonies of Black-tailed Prairie Dogs (Cynomys ludovicianus).

Another thing was preying heavily on Rigo's mind: the prospect of having to face the North American.

Wolves reached the archipelago in the early 1990s preying heavily on the caribou but for reasons not entirely known they disappeared a few years later.

The Wikileaks report goes on to state that Albanian Mafia groups are preying heavily in Central America, where all roads lead to Colombian cocaine.

Cats, wild dogs, foxes, birds of prey, snakes and even certain kinds of arthropods have been known to prey heavily upon mice.

A variety of predators prey heavily on reindeer.

On impulse, because it had been preying heavily her mind for so long, she said, "The risks of age ",,.

Although found to feed on a wide variety of insects (e.g., flies, bugs and moth caterpillars and adults), they also prey heavily on spiders.

The sight of them filling the screen, hour after hour, was starting to prey heavily on Martok's nerves.