Some of the squirrels in the park are very people-friendly. If there is the slimmest chance of soliciting food from you, they will allow you to get  really close. The oddest squirrel experience: A squirrel near Sabin School in Portland ran down the side of a maple tree and up to my grandson, who was walking next to me, and jumped on his leg, then ran off in haste. I have no idea what that squirrel was thinking, but it was really odd, this random squirrel attack on a toddler!