4 ms·

Just as mirimir said, it is biological norm to draw line between your own kind and everyone else. For example, both dogs and cats don't kill each other, but dog

by labdsf 9y ago

Just as mirimir said, it is biological norm to draw line between your own kind and everyone else. For example, both dogs and cats don't kill each other, but dog can easily kill a cat.

b6 9y ago
Both dogs and cats do kill each other. It is not uncommon at all.
- 3131s 9y ago
  Yep, cats fight brutally all the time. My wife's old cat was a fighter and had the scars to prove it. No doubt he had killed many cats, and then he eventually succumbed to an infection from a nasty neck wound acquired in a fight.
  - 0xFFC 9y ago
    Ha ha ha, he was quite champion
giggles_giggles 9y ago
Chimps form tribes and go to war. https://en.wikipedia.org/wiki/Gombe_Chimpanzee_War https://en.wikipedia.org/wiki/Gombe_Chimpanzee_War