It depends on where it is. If it's in the canal it can be worked down.
I took my dog to a reproductive specialist vet and was told his is in the abdomen. It won't be coming down. He's almost 11 months and it has not come down. There is some treatment involving shots they can do before they are 4 months old to help it come down, but I think it depends on where it is. If you can go to a reproductive specialist vet they would be the best ones to advise you based on their examination of your dog.
Riley - 11/05/2012-8/30/2013 (Myasthenia Gravis)
He will always be in my heart.