Assertion: polar bear | /r/CapableOf | eat other polar bears
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Source sentences:
text: But in recent years, researchers observed behavior they'd never seen before: polar bears "stalking, killing and eating" other polar bears, according to the study.
text: Foxes: Polar bears even eat Polar bears even eat Arctic foxes
text: It's not uncommon for polar bears to eat other animals that have died, too (or even to eat other polar bears), though they hunt more than they scavenge.