"Dibs" is obviously a very real thing in the cat world, and I think it's something that we as humans should really try to respect more. For instance, if your cat decides it prefers your bed over its own and has pretty much claimed "dibs" on it, then I'm sorry but you're just going to have to find somewhere else to sleep.
One cat with this exact kind of possessive attitude went viral this month after she was photographed strongly opposing her owner's decision to try and sit in her very favorite chair.