@GolfNovemberUniform @apicultor @EUCommission They differs first of all in their behavior: a cat or a dog can escape more easily then an human baby or an human that understand he shouldn't go around. Chips help to bring a pet that has being lost to be found. (sorry for bad english) It's better to have a way to get them back at home then crying because we lost them.
You could say that people could just pay attention to their pet, but it's not always so easy and incidents can happen.