A dog.

If you are looking for something beyond a temporary adventure the dog is a nearly sure sign of doom.

Dog folks generally require a steady stream of incoming approval.

Single women with dogs most often more so.

In the moment your approval flow hiccups problems will start and you won’t be able to compete with the animal who always provides enough love to satiisfy her needs. You'll be gone post haste.

I've met some sexy cat owners who don't seem to have that problem. They enjoy independent beings and can share affection instead of requiring it.