Last May after a two-day rainstorm we spotted an unleashed small white chihuahua, quite terrified, running around in the greenery in Tompkins Sq. Park. along 10th St. We named him William, and since then he has had a variety of homes, and still needs a good one where he’s the only dog. He’s lovely but a little bit too topping for his size. Probably because he’s had to do for himself for a very long while. Now he needs leg surgery – to the tune of $1,800. His current owner can’t afford it and is thinking she will put him down. He’s survived too much to end this way. Can you help? I’m pitching in and if everyone who can could give a little he will be up and running and will find a good home. No one wants an injured dog. He’s in pain and can only use three of his legs. He’s between five and ten years old. Give William a break. He’s a brave little guy, and very charming.