Bonus time with Roscoe is A-OK. We count our lucky stars when ours go past 10, which is basically the average, and pretty true based on ourGrey anecdotal evidence. Georgia-Mae just turned 12, and like you, we're grateful.
Rango's 14 1/2, and Greyhound loggevity is usually given as "12-14", so I'm cherishing the extra time.
Since he turned 14 back in September, I've been hypervigilant about his eating.- the first sign of Zeena's decline was when she stopped being our chowhound. So, on the occasional day when he's not all that hungry, I get anxious. Then he wolfs down his food and bugs us for more. And there are days when he's a little slow getting up, and walking a little stiffly. Then he'll come galloping in from the yard, leap over the back steps and galumph through the house, followed by a minute or two of jump-spins.