My border collie/aussie mix is almost two years old. He gets a lot of attention and exercise. We take him to the local dog park for daily run/play time. Several times a week he gets to go twice a day. We work on obedience and play ball at home. He's a great, friendly, awesome dog, who doesn't really ever chew on our stuff and loves to cuddle up. At home he is really laid back while at the dog park he can run with the best of them.
At the park he loves to chase and be chased. He usually matches his energy level to the dog he is playing with. If they want to wrestle, he's m