Don't you just love golden retrievers?
Golden Retrievers are so friendly and gentle. That's what makes them such good pets
How about the hair though?  Don't they shed a lot?
They are long-coated. That means they have an inner coat to provide warmth and an outer coat to repel water
Do you have to strip out that undercoat in the warm weather?
That is an important aspect of grooming. Practicing this ensures a dog stays comfortable, in this case in warm weather
What kind of a tool do you use to strip the undercoat?
To strip the undercoat, you would typically use some kind of rake
Wow!  I didn't know that.  Is there any other specialized tools necessary for proper care?
Not sure, as I myself do not own a dog. Dog groomers have all kinds of tools and earn their living doing this