He is still a puppy, so that could be a factor; he may just not have complete control over it yet! As he grows and matures physically that should help. Otherwise, call the vet? Since Wolf_Q pointed it out, cockers DO seem to have this problem more than other breeds so if that's the case with Sammy then your vet should know how to help But I would wait until he is at least a year and then see if the problem is even still there