Both take up too much space on the bed.
Both have irrational fears about vacuum cleaning.
Both are threatened by their own kind.
Both mark their territory.
Both are bad at asking you questions.
Both have an inordinate fascination with women's
crotches.
Neither does any dishes.
Both pass gas shamelessly.
Neither of them notice when you get your hair cut.
Both like dominance games.
Both are suspicious of the postman.
Neither knows how to talk on the telephone.
Neither understands what you see in cats.