Hunting killer whales always eat the animals they kill, typically leaving behind only a few low-energy parts, such as fins. "Also, if it was just aggression, they wouldn't bother to tear off the fin," ...

Killer whales – also known as orcas – are apex ocean predators. The species is at the top of the oceanic food chain, thanks to their high intelligence, large bodies (up to 26 feet in length and over ...