I'm an older dog owner/carer. When is it that you become too old. At the moment, although nearly 70, I'm able to take my dog for walks, which she enjoys, play soccer in the backyard and keep her stimulated by teaching her tricks. I know she'd love to have the extra stimulation of going to agility classes, but I wouldn't be able to keep up. Just wondering, when is the owner/carer too old? She's a six year old Border Collie/Kelpie/Australian Cattle Dog cross and I've had her since she was 9 weeks old. Is she too old for me to make the extra effort to go to the agility classes, or am I? We went though all the puppy classes/ obedience training classes when both of us were younger.