I'm wondering if there's a type of allergy that can cause diarrhea. I know you're feeding him high quality food, but I wonder if there's an ingredient in it that he's allergic to? Did you switch recently?
Right now I'm giving him Natural Balance dog food. I don't think this could be a problem though, as he's working on his 2nd 35 lb bag so I didn't switch very recently.

Before Nebo was in the crate he was in the bathroom with me. While I brush my hair, etc. he always lays in the bathroom. He was just in the back by the laundry basket asleep as he usually is. The garbage can was up on the shelf. I'm pretty sure the toilet lid was closed, and even if it wasn't, we don't use those blue cleaners or anything. I never saw him do anything but sleep until I called him.

I do know he was never at the neighbors house. I'm paranoid beyond, he's never, ever allowed to run loose. Believe me, I'd know if Nebo had made an escape, I'd have to go catch him and have a heart attack in the process! I don't think he would have gotten into a dead animal either. I've never found anything like that in my yard, I've never seen an alive squirrel/bunny/etc. in my yard either. Plus he was only outside this morning for 2-5 minutes.

The vet did say to not feed him tonight (which I didn't) and to only give him about 1/4 of the amount of food he usually gets tomorrow. She said if he didn't improve that blood tests would be the next option.

I'm hoping I'm just over-reacting (I'm quite talented at that) and he's fine.