So today I came home and noticed an off smell in my apartment. I tried to locate the smell, and saw that Edgar had regurgitated the rat I fed him this past weekend, as well as pooped twice. I can't remember if I fed him Saturday or Sunday, but it was a small/medium f/t rat from Petco, no larger than anything he's eaten before. He accepted it with gusto, and ate it without a problem. I noticed when I defrosted the rat (and yes, it was definitely thawed all the way through, and was warm when I fed it to him) that it was covered in a bit of blood. I didn't think anything of it, but now I'm wondering if maybe it had been defrosted previously before I bought it? Despite the regurge, Edgar was alert, and active, and when I cleaned his tank he was acting the same as he normally does, trying to climb up the glass or up my arm. Now for temps: I have a day bulb and a night bulb as well as a side-mounted UTH. The warm side of the tank is 85/90F during the day, and the cool side is 75/80F. At night it gets to ~75/80 on the warm side, and 70/75 on the cool side. He's never regurgitated before, and I'm hoping it doesn't happen again. Any idea what could have caused this? Should I contact Petco? At what point does he need to see a vet? ETA: I /JUST/ saw one of my cats jump from the floor onto the top of his cage. I wonder if she did this and scared him/threatened him and that caused him to regurge.