I found some wonderful cat videos @ Cornell University College of Veterinary Medicine which provide details on how to care for your ailing cat.
In this case, not even ailing -- but how to brush a cat's teeth. We have a cat struggling with gum health, and we have been brushing her teeth for well over a year. We don't use the implements shown in the video; rather, we use a q-tip and some veterinary oral rinse. And we didn't introduce the new health regime the way the video suggests, tho' if I had to do it over, we would have. (note: early in the video are shots of sedated cats getting their gums cleaned; be prepared to cover your eyes if you don't want to see cats in an operating theater)
They have a long series on Caring for Your Diabetic Cat, which, sadly, I no longer have to do. The video has a great explanation of what diabetes is and how it affects your cat (including some distinctions between feline and human problems related to diabetes), how to give injections, and nutritional therapy. The series on Trimming Your Cat's Claws is very helpful -- and useful if your cats like to scratch things.
If you are caring for a cat, I recommend looking at the list of videos Cornell offers and watching the ones that apply to your cat.
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