Gromit made it to 11 years. Got an adrenal gland tumor and didn't survive the surgery to remove it. When the two younger dogs were puppies and irritated him enough, he'd mow them down and straighten them out instantly. Shortly after that, he'd play with them normally. When he got to be about 7-8 years old, he' rarely play with them, but he'd let them hammer him as much as they wanted. He'd just turn his head and let them go, even though he could have stopped it at any time. He should have lasted 4-6 years more, but you get what you get. He's always missed. Named him after the Wallace and Gromit dog.