My packman is lazy as well but I did notice if he completely borrows for a few days. Then it's a sign hes compacted and needs to poop. Seriously I get him and put him in room temp water, a few minutes later. He does his business and is read to hunt. Best of luck packman arent too exciting in my experience so far.

Proud parent of...2 Retf, 1 whites tf, 2 agtf, 1 Btf, 2 Milk tf froglets, 1 packman