So I was doing my routine clean and Shilo has always had this weird runny poo. It's something I've never been able to understand. Salem has these large cat-like feces, but Shilo has small runny poos and he always has since I've gotten him. The breeder I got him from told me its stress, and I keep assuming that it'll help itself. I have the poo saved this time so I could look for any signs of parasites, is there anything I should look for? He's always been thin, but he's really long and he's not triangular and has a healthy curious appetite. Yesterday he did not eat, he was more interested in curling up on me, even going so far as to bypass the rat completely and stretch to get ahold of my arm (not biting, just something he does. He likes to play "Lets be a bracelet!" every time he comes out.) So today I found a large sized chunk of what was runny poo (and now hardened) in one of his little fun hides. His shed was also very recent and came off fairly clean with only a small patch on his neck which was removed during a bath.

What should I look for? Should I start saving up for a herp vet?