Question: “Is there a dog toy that exists that is not only super-durable and strong, but also is actually fun to play with?” Answer: “Yes – The Jolly Egg. Designed for constant, erratic motion, the Jolly Egg has a fun oval shape that dogs love to chase. They can never quite get a grip on the Egg, but they love to try! Since the toy constantly escapes your dog, it gives your dog a safe, fun outlet for their prey instinct. 8" Egg recommended for dogs under 40 lb. 12" Egg recommended for dogs over 40 lb.