Some dogs could play fetch all day long, while others have absolutely no interest in chasing a ball. Some might love "find the treat" type puzzle toys and others may completely ignore them. The important things are that your dog finds the toy interesting without becoming obsessed over it, and that it is size and safety appropriate for your dog. A Chihuahua is probably not going to be a good match to a Kong as big as she is, and you wouldn't want to risk having your Malamute swallow one of those smaller size tennis balls.
Cesar MillanHumans will always tell you the story. Dogs can only tell you the truth. Trust your instincts and listen your dog.
Cesar MillanMy business life takes a big chunk of time, but I still put exercise in my schedule. I'm up at 5 A.M. and get up and stretch and go for a run in Runyon Canyon with all five of my dogs.
Cesar Millan