Both my dogs "HAVE" their own beds, but Elle (GSD Mix) has always been a Mommy's girl and sleeps only in her bed for about 3 hours, the she "TRIES" to sneak into my bed (which normally she wins), Emma (GSD Pup) has a big crate thing (I'll show pics of soon) that she loves and even runs to it during the day when she wants a good long nap, she's never slept with anyone, she won't even let you near her bed without nipping you, and if Elle gets near, she starts showing her teeth and growels (she's very bossy). She has several baby blankets in her bed with her and a pillow to go with too.
Emma @ 2 months, tucked in her bed trying to go to sleep!!
(The date is not correct on the pic)