Every single dog is different, and its personality can never be guaranteed. There is no reason that this breed would not be suitable for your son on the surface of things, but if you were getting an adult dog, then it is perhaps not the most ideal pet. Without knowing the full history of a dog, you can never be sure of how suited they are for any purpose, let alone children. However, if you are buying a young puppy, then the fact he will be familiarized with your son from a very young age is a good reason to suspect that the dog will become a much-loved and well-suited member of your family.