Aren't we a couple of good looking lads? We're smart, too. I'm a Mearle Great Dane and am two and one-half years old. Sebastian is the old man, at five-years-old, hahaha, and he's a Great Dane/lab mix. My human mom says I'm the more hyper, er, energetic, of the two of us, but then, Sebastian had it harder than me, - before he came to live with us, that is. He was kept on a chain all the time and rarely got to eat. He had heartworms, too, but luckily, we got him to the vet in time and now he gets his heartworm medicine on time, just like I always have.