Huge Golden Retriever?

I have a two year old golden and he's huge! Not fat, just very tall, fit, toned, and muscular. Yet still the lanky playful boy he will grow old being. He is about 4'11'' on his hind legs at about 110 pounds. His head on me is just at my hip and I'm 5' 7'' with moderate to long legs. Does anyone else have a mutant golden ?!?! ;8D