Snuffle balls are excellent mental stimulation items! These items are a just a bit bigger than the size of a grapefruit. Hide some kibble or treats in the folds of fleece and your pup will have a blast using their sniffer to find them. Snuffle products are meant to be supervised items. These should be put away when not in use. They are not built to be toys and it also I creases the novelty of the item when your dog only gets to use it at meal or treat time.