3 year old Golden retriever (Dayton)

3 year old golden retriever.
He is housebroken, sits and lays down.
He is neutered and microchipped.
Could use some more training.
He does growl at other animals if they come near his food.
Has never snapped or bit anything or anyone.
He is good with kids, other dogs and cats.
I will only let him go to a home that is good for him and his new owner.
(There is a rehoming fee).