Q: Our neighborhood is inundated with feral cats. I don’t feed them because I don’t want to increase their population, but I do feel sorry for them during the cold winter weather. What can I do to help them? A: You can protect feral cats from injury and poisoning, provide shelters to help them stay warm and dry, and have them sterilized so the population stabilizes and eventually declines. If you park outside, protect the cats from your car’s engine. Outdoor cats often climb under the hood to snuggle next to the warm engine. If they fall asleep, they may be injured or killed by the engine’s moving parts when you restart your car. To prevent this, bang on the hood and look under your car when you return to it. Before you start the car, honk the horn to scare away any cats dozing underneath. Antifreeze causes kidney failure …