Wow, that's a hard question. I'd like to spread the money around, but one that immediately springs to mind is our local hedgehog hospital. The lady who runs it does a great job, she puts so much of her own cash into it. I would love to give her a big wad of cash.
As you have probably guessed, I am passionate about wildlife. At the moment I have two hedgehogs recuperating in a pen in my garden. One has had her nose sliced off with a lawn strimmer, and the other has only one eye. Both are doing very well. [:o)
I would give to other causes as well, but she would be my first port of call.