My sheltie, Simba, needs grooming badly. Since we got him a few months ago he's had wads of balled up hair stuck on him belly, and he has a huge one behind his right ear. Besides that his rear and stomach needs trimming badly. Heres the problem with it. We adopted him, he's almost 2 years old and we're having a heck of a time breaking him in. He does not respond to disipline of any kind, he is stuck in his ways. If we leave him unattended and not in his crate for more than 15 minutes he'll have garbage riped up and pooped or peed wherever. Otherwise while we're around him he's just an angel. We need to be able to do grooming ourselves because we cannot afford a professional to do it all the time. We brush once a week and that is a hastle, he will not sit still and gets defensive. If we attempt to trim his nails he tries to bite. If I attempt to cut hair off he yelps and or pees on my wife, which ever comes first. Its just flat out ridiculous. We're not being super nice and we're not being super mean, we just want him to understand "this needs to be done so deal with it". Can anyone help me???