that looks like an australian cattle dog mate,and just a pup to ,is he well behaved, they are a beautiful dog very faithful and protective,especialy of children they grow up with,but they can become bored if left alone for long periods and can become very destructive,after all they are what are known as working dogs over here in australia,there is an old song written in the early 1900,s and a statue to the australian cattle dogs it,s called the dog on the tucker box and is on the road to gundagai