You failed to mention what breed of dog you are having the training problem with. Some breeds are more agressive than others through natural instinct. Others can be too close bred which can also be a cause of agressive behaviour. There are many other contributing factors to consider including the dog's diet or any changes in the home such as a new baby, new neighbours with noisy kids, vacume cleaners, washing machines, living near a busy road or loads of other reasons. If the dog has receintly developed this behaviour or if it has always had it.

There are many good places online where you can get tips and advice on training your dog and information on dog food and even recipies on home made dog treats.

The two main attributes when training your dog are patience and being consistant.

There is a puffer collar that can release a burst of water spray when you press a remote button. This can be activated when your dog starts to be aggerssive by pressing it a couple of times. It will cause the dog a little discomfort without harming it and should only be used when the dog is not obaying your commands. The collar also works well when you shout for your dog to come to you and no reaction, a couple of presses will make it stop whatever it is doing and listen to your command. When the dog starts to obay and behave it will associate this with not having the water spray and discomfort that goes with it.

If you use your main search enging for "dog spray collar" you will see many suppliers.

If you want to see the dog directory with the dog food secrets and dog training tips then visit...

http://www.ayrshirekennels.co.uk/links.html

Your dogs behaviour will improve and you will both benefit from having a better behaved dog.