The massive fish, Leptostyrax macrorhiza, would have been one of the largest predators of its day.
A fossilized tooth dredged from the bottom of the English Channel near Dorset, England, belonged to a formidable Jurassic marine predator and is the largest known tooth of its kind found in the U.K.
U.S. Predators are operating from the border, though ground intelligence may hold the key.
Connecting protected areas and allowing tigers the corridors they need to roam could help rescue currently bottle-necked populations.
Ranchers in Colorado are baffled by a series of animal mutilations. Is there a scientific explanation to this mystery?