Is It Safe For My Cat To Sleep Under The Covers. In fact, sharing your bedroom with your canine companion—as long as he isn't under the covers—may actually improve your sleep, according to recent research published by mayo clinic proceedings. In winter in cold wisconsin, they do enjoy sleeping with me.
If you’re using standard blankets, there should be no oxygen concern. Pets can safely lie on it or next to it and benefit from its warmth. I, too, have under cover sleepers.