I have a 12-year-old Rottweiler/Lab mix. He has been arthritic for a few years, and been on a glucosamine/chondroitin supplement to help that. Lately, though, it seems to have gotten a LOT worse very quickly.
- When he's up and moving, he doesn't bend his left hind hock much, so he walks kind of "peg-legged."
- There have been several instances in the past couple months where his back end has simply collapsed while walking up stairs, even on the single step up to my porch.