[Jennes.C]

Is there any advise in solving my dog's bad behavoiurs? i owned a dog which is more than 1 years. He has many bad behavoiurs. He always chased after people and those who is riding motocycles. It's quite dangerous and he may tend to bite people. Besides, he has biten chickens owned by my neighbour in my neighbourhood area many times. For your information, he can move in and out of my house freely and he can still open the gate even though the gate is already closed. I can only prevent him to out out by chaining him (which i dislikes) or tieing a rope around the gate so that he cannot open the gate. So can anyone recommend any solutions? is it sending him to attend obedience class the best solution? However, i am from Kuching, Sarawak and i don't know any obedience classes are offered here. Thanks.