The thread by Abby's mom on whether her girl is a mix made me think about Theo's coat. He's all Lab, with the classic white patch on his chest. Now he's 6 1/2, almost 7, and he's starting to grey prominently on his muzzle and feet. He started to grey around 5. He seems to be greying much earlier than other Labs we know who don't have the white patch. Is this connected, or just a coincidence?