GRs have become very popular.
Backyard breeders saw the dollar signs and now they are wrecked.
I have heard many stories of GRs and the equally popular Labs with temperament issues that simply should not *ever* exist in those breeds.
Hereditary thyroid issues [which greeders do not test for] are also often a cause.
Bad amateur breeders can ruin good dogs so fast you would not believe it.
My lab is a sweetheart of a dog. My neighbor’s golden retriever is a sweetie, too. But the pup I had had a mean streak. Hopefully he outgrew it. I am very glad I went with my Sweet Franklin. He is a dear boy — a big 120 pound boy.