content: My dog is a flat-coat retriever, probably about 60 lbs. Unlike many others, I did not buy the Med/Large Kong Ball toy because my dog chews apart everything she can. She doesn't. I got the Kong ball because my dog loves the way the regular Kong unpredictably bounces and I assumed the material they use for the ball and the reg Kong would be identical or close to it. Not so. The ball weights a ton. Not just for my dog. In general. Period.So, this may be a great chew toy, for those looking for that, but it doesn't bounce and, if you threw it with enough vigor to get decent bounce out of it, I'd worry about putting a hole in the wall.