i have a question. I know i am going to be yelled at for becoming a "breeder" but i really have a serious question I would like answered. We have 3 dogs. I have a maltese a maltipoo and a long haired jack russell terrier. The jack russell is nuetered. the maltese just went into her first heat. The malti poo is a boy. i have seen the male jack russell try to hump the female maltese but the malti poo doesnt seem interested. Is this normal. Does he not know how to do it? i dont understand. I know this is a weird question but im concerned.