I am not defending these actions. I am refuting your claim that animals love without property. Also refuting the idea that humans invent these things.
Animals learn from humans they are very smart. Once humans started killing animals with weapons history changed and they adapted. Dogs and Cats also act very much like their owner.
I am talking from experience. I actually studied dogs a lot in the past 7 years since I had 5 in total and was always living with cats. Dogs totally behave like the owners.