Though a land-dwelling creature, Allonogmius's aquatic instincts often lead it to shoreline hunting grounds.

Powerful in shallow water, Allonogmius will sometimes drag prey into shallow pools to gain an environmental advantage.

Like the Allosaurus, Allonogmius is known to prey on large herbivores like Stegosaurus.

On land, the large dorsal fin of the Allonogmius helps in heat regulation.