Lock your spouse and your dog in the trunk of your car for an hour, and then open it back up... and see which one is happy to see you.
Lock a cat in a trunk for any length of time (13 seconds or 13 hours), and when you open it, they will either run from you at 70 mph, or will lay in the trunk as if it doesn't matter that you opened it. Your existence, in both cases, is irrelevant.
Most dogs, no matter how large, will want nothing but love and friendship from you. A cat, if it is large enough, will have no qualms about toying with its owner for an hour and then tearing your head off, for its own amusement. They are practiced and aloof killers, who love their craft. (They're also soft and furry and feel nice to pet... but that changes none of my previous statements.)
Lock your spouse and your dog in the trunk of your car for an hour, and then open it back up... and see which one is happy to see you.
I thought about trying that once...
5.56mm