Twyla started limping on friday. Didn't want to go down stairs or walk around much this weekend. So, first thing this morning I took her into my vet. They isolated the problem as being in her shoulder, and suggested X-rays. They took a few right then and developed them. The bone on the top of her leg where it meets up with her shoulder is "not normal". It could be a bone infection of some kind, but is much more likely to be bone cancer. :( She goes in wed for a bone biopsy to find out what we are dealing with. If it's an infection she can get treated with antibiotics, so thats the best case. If it's bone cancer the treatment is amputation + chemo. Reading up on things it appears that the median survival times for that are pretty good. Will have to see what happens. :(