I don't know much about this subject and was just wondering how one would deal with this? We often see dogs who will chase down squirrels and try and climb trees to get to them (mostly terriers). We see some owners who kind of resign themselves to the fact their dog chases squirrels and will let them bark up the tree for ages. If you had a dog who chases birds/squirrels etc. how would you deal with it? Is it possible to teach them a solid command? Or is there anything to manage it?