I watched a video on Animal Planet's YouTube channel about Goldens.
It says Goldens bite, they get hip dysplasia, and can get cancer.
1. How can I make sure my Golden won't bite visitors, people, or my own family members?
2. Should I be concerned with the hip dysplasia. How do I know if my dog will get it?
3. How will I know if my dog will get cancer?
1) All Goldens bite because they're bred to retrieve, and therefore, they explore their world with their mouth. Puppies are especially mouthy as they are still learning about the world. When we got our Bear (at 9 weeks), he would mouthe very very hard. A trainer advised us to let him mouthe on us and whenever he would bite and it hurt, to yelp and to end the play session. Stand up and walk away. The puppy will learn bite inhibition. Another school of thought, is to not allow the puppy to mouthe on your AT ALL. The moment the puppy puts his mouth or teeth on you, yelp and end the play session.
This will take time, and as he progresses through the stages of puppyhood, he may revert back and you have to start at step 1.
2) Hip and Elbow dysplasia are very serious things. While you cannot guarentee that your puppy will not get any form of dysplasia, the best way to prevent this is to a) buy from a reputable breeder who does hip and elbow clearances for both of the parents and for a few generations previously and b) do not overexercise the puppy and limit jumping - especially on hard surfaces. A puppy's joints won't be fully developed until 18 months of age.
3) As far as I know, there is nothing you can do to make sure your animal doesn't get cancer, nor anyway to predict it's occurance (besides checking family history). Cancer is a horrid disease and does not discriminate.
I hope that helps!!