Men open their own cans. Men don't eat cat poo on the sly. Men don't shed as much, and if they do, they hide it. Men don't drool. Well, most don't.
Men can do math stuff.
Men don't have to go to the vet to have their anal glands expelled. When men have to go outside in the rain, they don't stand in the doorway and whine. Dogs have dog-breath ALL the time. Holiday Inns accept men.