Danny
Posted : 3/10/2006 12:37:14 AM
Hello there
As you say yourself, there could be a health related problem. Rule number 1 with all behavior problems is to rule out possible physiological reasons. So do Shandy suggested and visit a vet. Once that is cleared, it will need some serious work to make two things clear to the dog: 1. your son means good things, such as many treats and lots of play 2. your son is in charge, not the dog.
To train these things takes a bit more than a line or two of advice. You should get you, ideally, to a decent dog trainer who can show you how to do these things, or you should get yourself two or three good dog training books (yes, more than one), for instance by Patricia McConnell (The other end of the leash) and Jean Donaldson (The Culture Clash - she talks quite some about agression if I recall right).
If you have any more questions, feel welcome to ask.