I love the history between cats dogs and humans because its really just... so much
Dogs evolved from wolves before they came into contact with people and were so social themselves that people and dogs found each other cute and naturally stuck together
Cats basically domesticated themselves because humans werent a natural predator and had big safe shelters for them and their offspring so all the kitties came to live with us and eat up all the pests so we grew fond of them hanging out in corners keeping the mice away and they eventually integrated into being part of the family
We co-evolved with cats and dogs so closely that new brain functions formed to give us all a burst of dopamine when we see each other because our brains all go "CAT!! DOG!! FRIENDS!!" to make us stay together to aid in each others survival and social needs
We transcended the species barrier with socialization because touch starvation can be treated with therapy dogs and cuddly kitties and the same synapses that light up when we talk to other humans light up when we interact with cats and dogs differently than with other animals
I just really like how we have this ingrained connection with other species strengthened over thousands of years that will probably never be broken and how weve so naturally kept it in the form of keeping pets around after we moved past what we originally needed each other for