We have squirrels in our neighborhood. We have skunks, opossum, and raccoons, too. There is even a pair of ducks that come around every Spring and hang out for several weeks.
I enjoy watching the squirrels. They are very funny animals and quite entertaining. However, I don't feed them. I have a dog who is in the yard a lot. I don't really want the wild animals to get used to finding food in my yard. There is a chance of attracting the wrong kinds, too. 
More importantly, I'm worried about my dog contracting something from these strays. I have found raccoon poop in the yard on occasion. As I understand it they can transfer roundworm eggs through their stool. But, I do enjoy watching the animals as they pass through.
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