You may recall the above photo. This was taken in the hotel room we stayed at briefly when we first moved to Oregon (we were waiting on our furniture). For some unknown reason, Kitty felt inclined to share a crate/bed with Chalie - all of his own accord.
Fast-forward 3 years (almost exactly!) and our new cat, Cooper decides that Kitty must have been onto something. I look up from my Kindle and see that Cooper has made himself comfortable on Charlie's dog bed - while Charlie is on it! Charlie awoke when I grabbed my camera, but they were both sleeping peacefully when I first looked up.
Neither Kitty or Cooper ever joined Maggie on her dog bed. Personally, I think it's a heat thing. Charlie radiates heat. He's often cold and shivering in the winter and can function quite well in the high summer temps. And his head is always hot to the touch. I think the cats like this feature!
Maggie is usually cool to the touch. She is naturally well insultated and is always energized and happy on a cold brisk morning. She will almost melt before our eyes in the summer heat.
Funny, but Maggie is just like me. Charlie is just like my husband. Both Kitty and Cooper will chose to cuddle up to my H long before they'll do the same with me. Apparently, it's not that they don't like me, it's that he is a better heat source in the winter! Phew, I feel like less of a pariah now. ;-)