Why don't animals hate?

I saw an interesting story on National Geographic channel once. A group of migrating elephants was passing a river or something with crocodiles in it. A young elephant wandered into the water, away from the herd and was killed. When the elephants migrated back that way a decade later, they picked the crocodiles up with their trunks and beat them against the trees for hours, long after they were dead. Guess the old saying about an elephant's memory is true

Trust me...they do.

Because they don't have hands. I'm pretty sure if my cat had hands, the neighbour's cat would found hung, drawn and quartered

Because they are enlightened.

Because they can't contemplate

Lions and hyenas are mortal enemies

Lol.. adorable, like you.

they do dogs hate cats