Dog attack

[Alex Alaniz]

Question for my multi family investors. In this particular scenario, I have a duplex and each side have 2 dogs. Neighbor A's dogs are never leashed and neighbor b's dogs are always leashed. A's dog ran after bs dog and bs dog bit neighbor A as a result of him sticking his hand in her mouth to try and break it up. My question is who's at fault and what should be the protocol following this?