In regards to woody, the vets feel it may also be a neurological issue. Something about the nerves not functioning correctly on senior dogs. It supposedly effects the back legs more for some reason and it prevents them from moving the legs properly. And there are no meds to aid this issue. Penguin will probably be put down within the next week or two. She doesn't seem to be in pain or a lot of discomfort, from what I can tell, but she is not eating and is growing weaker and weaker. The cancer appears to be affecting her ability to swallow and I have not found a substitute that she will eat that is in a liquid base form. I've tried soft cat food mixed with water and stirred into a paste, minimal success. Baby food was a no-go, also.