u/PlasticAmoeba5569

Hi everyone, I have a medium sized auntie doodle. He is a really sweet dog, but is highly anxious. He was left to fend for himself on a farm for almost a year, and has had some trouble adjusting to living in a home. Recently he got scared and bit someone. I want to prevent this from happening again and am wondering what type of muzzle I should get?

Is there any training advice anyone has? He is a sweet dog and I don't want to have to put him down or give him to a shelter, but if I can't control his aggression I may have no other choice.

Thanks everyone!