Hi,

three weeks ago I moved my snake to a new enclosure. A week after that he ate happily. That's when the problems started.
Like usual I tried to feed him a week afterwards with a F/T rat. When I tried to pick the rat up the tail fell off. I never experienced that before, so I didn't think too much of it (I know: stupid). I offered him the rat and he took one bite at it but then refused to eat it. I figured that it might have gone bad.
Today (like usual) I tried to feed him again with a rat from the same package as the first an the second one. I offered him the rat but lost the grip on it when a whole piece of skin on the back feel off. Before I could intervene my snake had already caught it. Since last time he refused to eat the possibly rotten rat I thought that he might know better than me but he didn't. He regurged just a few minutes ago.
I threw the rest of the rats away and I'm going to buy new ones.
Humidity is at 52%.
Hot spot is at 90,5 degrees and the cold spot is at 80 degrees at the moment.

Can anyone please give me some tipps? Is it likely that the regurgitation was due to the rats or could there be other problems?

I'm really worried. Thanks to everyone in advance.