She's a very fit healthy 13 so we think she's got a few years in her yet! Honestly it's a miracle, we nearly lost her when she was 7 or 8 to hip issues before finding a solution that worked for her and we've got her to 13 without ever being as sore as she was before. Now she's starting to have some mobility issues (she can't jump onto the bed easily anymore so I bought her some stairs) so I'm looking into additional joint support, but she's still happy and playful
Our new dog Beau is a huge bouncy goof and she gets cranky with him when he's too rough but they play like puppies together and I think that's helping a lot too.