Hi, thanks for your question about Ambrose. He certainly sounds like a special Kitty. Unfortunately, arthritis and other skeletal pain is common in older cats, and we have few options for managing this pain very well. Cosequin is helpful, but often not enough in the later stages of illness. Metacam
is a non-steroidal anti-inflammatory that has shown some benefit, but some cats can develop kidney
damage as a result of the use of Metacam. There are no safe over the counter medicines that will relieve pain in cats - cats are very sensitive to the side effects of most human medicines, and a single dose can be deadly for some drugs.
Euthanasia becomes a much more humane choice than natural death, in many cases, when the quality of life has diminished as a result of pain, decreased mobility, decreased self-sufficiency, and other factors. If Ambrose was my patient, i would support a choice of euthanasia, based on what you have told me so far.