I've told this story several times here, but here goes again...
When I was a kid, pretty much everyone in the neighborhood fed raccoons on their back patio. There were several mommas that would bring their babies around and make the rounds house to house. Possums would follow later in the evening. Anyhow, for years, it was never a problem. The mommas would bring the babies, we'd hold the food (usually day-old-bread bought on the cheap), she'd take if from us and give it to the babies. My dad had a half of a giant clam shell that was about 2.5' across (once belonged to Clem Studebaker, the car manufacturer family), that we used as a bird bath. The raccoons would soak the bread in the water and eat it. Eventually, the babies would climb all over you, taking food from your hands. It was fun for many, many years.... until one year....
There was a little male raccoon that became very friendly. He'd climb right up your pants leg and shirt and sit on your shoulder and take food out of your pockets. He'd play with the dog. He'd sit in your lap and go through your pockets. Quite fun. One day I was sitting in the kitchen talking on the phone and the raccoon comes walking by me. How'd he get in? I carried him outside. A couple days later my sister, who had a bedroom in the basement, woke up and the raccoon was sitting on her. She carried it out of the house. 10 minutes later, it was in the kitchen again. We couldn't figure out how it was getting in. Finally, I figured out that it had slit a screen at the top of a window, would climb in, and the screen would flap back into position. So, we only opened the windows about 2" so it couldn't fit through. And then it got bad.
If you went outside, it would chase you down, aggressively clawing at your clothes.
Then it shredded several more window screens trying to get in.
Then it started clawing and gnawing up the wooden doors and window frames.
Then it started clawing at the tar and gravel roof trying to get into the house.
It ended up doing about $2000 damage to the house.
My dad called the Humane Society for suggestions. They explained that raccoons, especially males, can turn highly aggressive and territorial once they hit puberty. My dad felt it was our fault for creating the monster, so he didn't want to shoot it. The Humane Society suggested we live trap it and they had a place to release it. It took several days to trap it, as it was so big it would leave its tail in the trap door and it wouldn't latch when it closed. He'd eat the bait and back out of the trap. So my dad fastened some bricks to the trap door for added weight and we caught it that night. They took it away and we learned our lesson.... no more feeding wild animals.