OK, now I need my fears comforted...

So I have had my new guy, Escobar, a Hypo Colombian for about a month. He has settled in very nicely, eaten every week like a champ (4 rats), and is just a puppy dog when held. But dang nabbit, he just won't poop! I have had balls and JCPs go a couple weeks without pooping, but this guy is really starting to look like a gravid female in the backside. His sausage butt really looks uncomfortable and his skin is pretty tight around his vent and up his body about 3-4 inches. Vent looks fine.

I have given him warm 30-minute soaks for the last three days and still nothing! Feeding day is coming Sunday and I am almost afraid to feed him and fill him up more. The only change was he was being fed mouse hoppers by the breeder and when he came to me, I switched him to lean rat fuzzies. Can anyone attest to this hold out? Driving me absolutely bonkers...

THANKS!