Ok so I have 3 dogs which are awesome dogs I've only had problems with the newest member of the family and I think it's just because he's younger. My oldest 2 are 12yrs old and 3. He's almost a year old and now he's non stop biting and nipping at the other 2 which they tolerate until they get fed up and snap on him. Every time he does do it I try to correct him. Well now I have nieces and nephews coming over pretty much all the time and he constantly nips them and bit one of them. As soon as this happened my other 2 went into full protection mode and went after him. Thankfully everyone was ok but I'm still dealing with his nipping issue. I've been reading up on muzzling and maybe thinking that should be my next step? Has anyone dealt with something like this? Or even muzzled their pets while people are at your house? I'm actually open to any idea of how to correct this behavior. He also is a pit mix with a Bassett hound so I really don't know his background history which I was told to look into. He was a rescue.