Does anyone know of a good dog trainer who could help me deal with a 14mth. old extremely strong, stubborn, extremely quick, easily distracted, brat of a dog? He was great from the get go with my two other dogs...never a problem, but when out walking some dogs he's OK with but others he starts throwing shapes and sounds like he wants to murder them...all rather upsetting and it's not a pleasure to walk him. I got him when he was about 9mths old and obviously no socialisation or training done before that. He had been dumped by previous owner in a bog in Co Meath for who knows how long.