He’s 9 1/2 years old, and has been in declining health since January. But up until this morning, he was a very happy bunny, eating, pooping, and running around like usual.
I found when I came home from work. He’s laying next to his food dish, still mostly full of last night’s pellets. His breathing is somewhat labored, though he doesn’t appear to be stressed. His whole body is chilled, and he looks as though he’s sunk in on himself. Occasionally, he’ll dip his head into his water dish to drink, but that’s it.
I’m not sure what to do, but my gut tells me that this could really, truly be the end. A stressful, forty-minute drive to the vet would only make things that much worse, I think.
I just pray his passing, if it comes today, is peaceful. It’s been almost exactly a year since his mate, Peanut, died.

Love and peace to you and Rex.
Your baby Rex, I feel sad for him. Drinking water is a good sign though. I’m not sure about your bunnies’ health in general, prior to this point, but if this is a night-and-day difference, it may be worth it to at least call the vet.
Your gut is more insightful than my random guessing, though.
I’m so sorry. I’ve never lost a pet, I can’t even imagine how horrible it will be. I hope that if it’s his time, he goes peacefully. Just know you gave him a great life and I’m sure he’s thankful to you for that.
Take care, I’ll be thinking about him.
oh no. :( i’m really sorry. all of my good thoughts are with you and your little one today.
I’m sorry to hear about this. I hope everything goes well for you and Rex. Best of luck.