About 90% of the time Dormir could be found stuck to Thistle's side. At first, when they were pups, Thistle found him annoying. I guess Dormir is just a different kind of irritating, Thistle grew to tolerate and even enjoy his company. No one else was friends with that cranky boy so Dormir felt the need to give him some appreciation. And so he did.
His name literally means "sleep" in Spanish