It's a Cat Thing (open)
Torn Ear had been greatly enjoying his stay with the X-Men. He felt he was learning much about human life. He'd even started wearing their clothes, even if they felt like they were strangling him sometimes. (Only elders wore this much cloth or hide... what was with humans and obsessing about being covered?)

Still, he didn't go out of his way to stifle some of his habits that he thought of as perfectly natural. Of course hunting had been shut down, as requested by Chieftan Xavier, but other things persisted. Like sleeping in shorter intervals than just one long period. It was normal for him to just doze, half wake and wander somewhere else, then lay down again.

Which is why anyone wandering the halls early in the morning would find him curled up on the floor, sleeping peacfully, outside Rachel's room.