How long do rabbits live?

DEAR PAW’S CORNER: I have a pet rabbit, Brownie, who is nearly 10 years old! He’s a Holland Lop, I think. He doesn’t do much at this age but sort of half-heartedly flop around his cage and the porch, then he settles onto the raised shelf in his cage and nibbles on carrots. He seems healthy, just slow. How much longer does he have left? Do you think he’s lonely? -- Vicky R., Macon, Georgia DEAR VIC…