Is that normal?? They left his harness on him for the entire 3 days, with a dog that's prone to matting, you can only imagine

. He had mats all over the body, some places you couldn't even see the skin, just a big (I say like an inch) clump of hair

. He doesn't really seem himself either

, did it happened to you Guys too? I'm hoing he'll bounce back but I know he won't be boarded there again, it's going to be a while before we go anywhere without him...
I did managed to comb all (or almost all) out, I think I used half of CM tube and a dematting comb - first time ever - it took me like 6 hours, but he finally looks himself again