[Jespah]

Hi HoW.Corgi,

When you say "leave" what do you mean? Is he left somewhere alone where he can't see you or others, or in crate, ...?

I agree with Emilie, don't reward him for biting - dogs are literal and will interpret the treat as motivation for continuing the behavior. When I go to work, I give my dogs each a treatball. It's something they love, it signals that I am leaving and it is something they now look forward to.

When you are finished playing with the pup, have something special he likes that you give to him - a special chew toy, a small cardboard box or empty toilet paper roll to tear up, etc. This will teach him that there are other good things to do and that play time with you is over. It still sounds like he could use some more leash walks to tire him out.