Yesterday my 7 yr old squirrel started throwing up a good bit out of the blue. He was perfectly fine and active the day before and then suddenly throwing up and lethargic the next. He's never had any health issues before this. I'd say he threw up on and off for half the day. We kept an eye on him and he drank a LOT of water on his own at least. But other than that he wouldn't eat or move around much. He also slept out in the open on the floor of his cage which he never does, he always sleeps in his nest box.
We didn't change anything, and we weren't even able to get him out of his cage to play the day before this all, so it's not like he got into something. We don't ever feed acorns, but the day before throwing up he did have an almond and hazelnut so not sure if those could be a problem somehow? We give fresh veggies every morning and clean out the old veggies.
This morning he went into his nest box and won't come out but I haven't seen him throw up today at least. He's still lethargic but he can climb up and down his cage some. Since he still isn't himself I'm worried something is seriously wrong and I'm afraid of him just going downhill, but I don't know how worried to be or what I can do besides make sure he drinks water! He won't even come to us for attention which he always does, it makes me sad that we can't even comfort him.
I'm not in a state that allows squirrels and I've heard horror stories of vets euthanizing or taking pet squirrels away (I even heard our rabbit vet tell someone else they just kill squirrels brought in) so I would prefer to help him at home if possible. Please give options I can drive to get from a store right away if possible!