anyone who had an "animal de companie" or "mascota" - cat, dog, hamster, guinea pig... knows how dear those creatures can become.
those mysterious emotions are deeply rooted in our animal past.
but - are those animals really happy ? enclosed in a flat, a cage... dogs become a veritable plague in cities, defecating and desperately trying to claim their territories...

consider that you already have a pet animal -- it's your own body !
try to become friends, teach it some good and not bad habits. to illustrate this point i pictured brain taking its body for a walk, in lower part of the image.
look after your inseparable pet - conveniently, it will live as long as you do, perhaps even a bit longer.

add your own images or data ;-)