There are different styles of collars designed for walking and training dogs. Most dog owners have the best of intentions, but have no idea how you can turn their pesky pup in to a sweet and well-tempered dog. Most dogs can't be faulted for their behavior, but you can find ways to change these things. Some may be aggressive, timid, silly and playful, domineering or fearful and skittish. These dogs help their disabled or unwell masters, in carrying out basic functions, which they themselves cannot do.
The most critical step in being a dog trainer, is http://www.ebay.com/sch/i.html?_nkw=dog+training+collar obtaining a certificate, which may be obtained after carrying out a certified course. Once you teach your Heeler the fundamental dog obedience courses like sit, stand, down, let it sit and supply commands these is planning to be useful to you while you curtail his desire to nip. The dog will quickly associate the command, action, and treat at which time the clicker will no longer be necessary.
Repetition, patience, and consistency are the keys to a happy relationship between yourself and your pet. Believe me, your dog will make mistakes, but there's no reason in shouting and yelling.