"A lot of large carnivores tend to be cannibals -- lions, hyenas, alligators, polar bears, " researcher Nicholas Longrich told Discovery News.

“许多大型的食肉动物都有残食同类的倾向，如狮子，鬣狗，短吻鳄，北极熊，”研究员NicholasLongrich告诉“探索·发现”。