My ex partner now has our dog, he is a Rhodesian ridgeback x Japanese Akita. He is 10 now. I have a child with the ex and so still see the dog all the time. My ex has said this morning that his back legs are giving up occasionally but he is in no pain it seems. I am so upset that this may be the end, however I have read that even though he struggles, exercise may help. Has anyone got experience with this. Can the vet do anything with him being a big and old dog?