My boy is 11 (a schnoodle). We have 50 acres, so he goes as he pleases on our property. He loves cars, anything that moves. He will bark and run around until you let him ride. A few weeks ago, my Uncle was filling up water buckets talking to us. He was going not even two mph, and he tapped my boy. Didn't even notice. Yesterday afternoon, he got bumped with the dirt bike (just the foot peg). He didn't notice, he just continued running around. But the worst was last night. My husband got a jacked up go cart, and his cousin (13) was trying it out. He ran completely over him. Front and rear wheels. Now my dog hates vehicles, doesn't want to ride and he has a slight limp when he tries to run. Broke my heart!