Soaking after a feed?

[che]

Hey Guys.

So my 2 year old male, who I have never seen spend more then 10 minutes in his water bowl in his whole life, has been soaking a lot recently.

He is +-1KG. Cage hasn't changed at all. Temp and humidity is as it always has been, 27 degrees to 32 on warm side. Humidity about 65%. searched high and low and no sign of mites.

Now the only thing I can think of is, he fed on Monday afternoon. A rat of 143grams. This is about 30grams larger then usual. He's been in there about 5 hours yesterday and just got back in now.

Any ideas on why he would be soaking? And just to confirm, does anyone think the meal would have been too big?

Thanks in advance