Hello all!

I have a 13-week old Pembroke Welsh Corgi male that is having some behavioral issues. He likes to roughhouse with other dogs (my family's, my roommate's) which is generally okay, but I've observed certain situations where he changes from playing to full-on attacking the other dog. It seems to happen when the other dog is given lovey-dovey attention at certain times (like when I come home from work) or if the other dog starts to win at play-fighting. We have done our best to teach him that such behaviour is NOT okay (scolding, brief pen time) but the problem seems to persist and he is possibly getting more vicious. I am not sure what the underlying cause is, and I am not sure how to best approach solving it. He has NOT been neutered yet, but will be eventually.

Thanks for your time!

Maxwell