I can recommend for playing / exercising the dog fully. Robust and ordinary flight characteristics - really no risk of injury to the dog. My disc has übrigends no unpleasant odor as sometimes criticized. Remains closed form for hang nowhere and swims in the water. As another tip I can highly recommend also the Aerobie ring - but this part flies extremely well and far - so you can use it only on correspondingly large surfaces (for ring-shape he can hang unattainable even in trees and is NOT float) , So we use depending on the environment the Frisbee or the ring.
