The large red bone, our year old won't let it be. After that it's a Jolly Egg and Jolly ball and can't forget the Jolly Flyer. She goes nuts when she has the ball which has a plug so you can put water in it to make it heavier. Growls,barks and pushes it all over the yard, great for her hind legs and chest.
She's whipped through most of the fire hose type toys tearing 'em to shreds and forget those braided ropes, she figured out how to tear them apart knots and all.
She also goes nuts for the Chuck-it ball (large).