Despite the many similarities we share with animals and regardless of your opinion of how bad and destructive humans are, we always will be qualitatively different from animals in a way that gives us rights that animals should not have. If we grant dogs the right of personhood, then they should be able to vote, marry, go to school... reductio ad absurdum.
I'm a dog lover myself, but this (American) societal tendency to blur the delineation between humans and animals is a slippery slope to absurdity.