Dogs and cats can actually curl up in a ball when they sleep. It is not necessary to sleep perpendicular to each other, stretched out to the fullest extent possible. I also know that sticking tails straight out and having tongues hanging out on the other end to maximize space is nothing but sarcasm.
My cats don't know that they are supposed to curl up in a ball.
Love this. I sent it to my cat loving DD & SIL