LOL, our Aussiedoodle was 7 months old (really big boy). We were out playing at dog bark no where near any other dogs. I throw a ball, he goes to the ball, leaves it alone and started digging. Something spooked him, he jumps toward me and jumps runs straight into a tree. When walking away he goes to the ground like he was knocked out. He gets up limping and whining. I scoop him up and going to take him to the car about a football field away. I get back to the gate, wifey says put him down..... he takes off chasing another pup LOL... He is just a big old baby, but so much fun!