Thank you all SO much for your helpful ideas. I think that problem may be, as several of you have suggested, that he is really getting too large to be comfortable in his crate for the whole night. He's 85 pounds, and really can't stretch out in his crate, which is definitely big, but not huge. He will sleep well out of it- the main reason I still have him sleeping in there is because I will shortly be moving to an apartment with a roommate, and I want to be sure that I am able to have a place where he can hang out and be away from the busy-ness, both to help him be more comfortable with the move, and also to keep him out of my roommate's hair, if necessary. However, I do have a bigger crate I will be using when I move. It is in fact HUGE. It's a wire crate, and is about 3.5 feet wide by 4.5 feet long, and probably close to five feet tall. I actually think it might be designed for a pony or something (haha)! But certainly, he could sleep in there- the only problem is, it's in the basement at my parents' house as it doesn't fit anywhere else! I'm planning once I move to put it in my bedroom (I'll have a big room) and maybe even loft my bed (carefully! strongly!) over the crate, so he can sleep in there, where he'll have tons of space to stretch out, right in the same room as me. I know he will like being in the same room as me- in the past, he has slept in my room, and has been happy and quiet. At my parents' house, he sleeps in the crate in the kitchen, because that is where their dog sleeps. So yeah, there are a LOT of potential distractions for him there- the other dog, cars passing on the street, any noises he can hear outside. No wonder he is having trouble sleeping!
Thank you all so much! I think for the next couple weeks until I move, I will try having him sleep in the large crate in the basement. It isn't ideal, but he can't sleep in my room, as the dogs aren't allowed on the second floor (my parents' rule) and he can't sleep loose in the kitchen because he would spend the whole night trying to play with my parents' dog, who he ADORES. Actually, I could try letting him sleep loose in the kitchen. My fear is that I want to have the option of crating him in the bigger crate for the night, and I am afraid if he gets used to sleeping loose, he will be unhappy going back to the crate, even if it is a larger one. thoughts on that?
sorry for the novel!