Even the most friendly and calm dogs get in tiffs with each other now and again. Sometimes a small scuffle can turn into an outright attack, no matter how well the dogs usually get along. These types of dog fights are often due to protectiveness over territory, toys or food. Often times our dogs will get into it when they see another dog out the window and one gets a little too excited, thus the bickering begins. Usually a few quick nips solves the dispute, but on occasion they go a little too far.