"My liver dalmatian would not play nor fetch any other balls except this flashing "red ball" ever since it was given to him as Christmas gift when he was 2 y/o, now he's 9. He would carry it around and show it off to other dogs at the park, swim and fetch it in water. I can't fool him w/ other cheap "red balls" either, he knows!! We hope this product would never go out for many yrs to come, or we'll be in trouble! Although costs a bit more than other red balls but worth it, makes our night time play more fun, last longer, durable and the flashing lights last as long as it said it would, and it floats. He loves it so, we have to have at least one on hand at all time."