The vast majority of human organs are incompatible with animals, it would be better to become an organ donor for people.
We love your compassion! Here are two articles packed with ideas on how to leave your legacy in a way that helps animals. https://prime.peta.org/2010/04/leaving-a-legacy-of-compassion/ & https://www.peta.org.uk/action/consider-donating-body-science/
Don't worry about animals. People need help worse
I suggest that you call them at the phone number listed here, go over there in person or visit their website for more information. Perhaps they can allow you to donate your kidneys for a sick dog who is on dialysis or perhaps they will allow you to donate your heart to a cat who has gone in to cardiac arrest. Who knows? Good luck to you and I hope you get the help you need very soon.
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