

Domestication of dogs is said to be around 15,000 years ago and “caveman” refers to humans in the paleolithic which is between 3.3 million and 11,700 years ago. So there’s a few thousand years where technically a “caveman” could have a pet dog.
Domestication of cats occurred around 9,500 years ago so past the cutoff for caveman.
The French word for anger is colère so I thought maybe it’s related to calere. It’s apparently from the Latin word cholera, like, the disease. Most romance languages also seem to use cholera as the basis for their version of “anger”.