Trait: Cat Person
This character has a special place in their hearts for cats. They may prefer cats to other animals (most notably dogs).
Don't apply this trait to every character that owns a cat, but only to those that express particular love and care for their pet. A person doesn't have to actually own a cat, but in that case should show their love for the species in some other way, like volunteering in an animal shelter or taking care of strays.