My puppy, Theo, is 3 1/2 months old and is biting me like crazy! It's only in play, of course, nothing aggressive. But it's to the point where his jaws are so strong and his teeth are so sharp that I can't play with him as much because when he plays...he bites...and it hurts! He's drawn blood a couple of times (through scratching, not puncturing).
When we first got him, I let him bite on my hands a little because I wanted to teach him to have a soft mouth, so I would say ouch when gentle when he bit too hard. It apparently didn't work because now he just bites harder. As I said, it's only in play. He just wants to nip at his humans, like he nipped at his brothers and sisters, I'm sure. And yes, he's teething, but he did this before the teething, so I'm not going to blame that. He is just a very mouth-centric dog that has to experience everything through chewing...and I'm ready for him to be done chewing my hand (and face and feet!).
I've started trying to teach him "no bite". So every time I pet him and he goes for my hand (which is every time), I say "ugh ugh, no bite". When he doesn't bite, I give him a treat. It's been very slow going and I'm not sure he's really getting it...or at least I'm not sure if he's accepting it. Hehe.
I'm curious if anyone else has had this nipping/mouthing/biting problem with their corgis and what they did squelch it. So far this hasn't been something he's growing out of and I'm not willing to wait because it's costing me play time with my puppy!