I purchased this ball for my sons dog who has gone blind in both eyes the dog is now able to play with a ball again he is able to follow the ball due to the ball having a bell inside it this ball is a great toy for a dog who is blindBought for my staffy who has age related cataracts but is ball mad The bell helps him to know where the ball is when he loses sight of itBought this for my rabbit to play with but he doesn’t enjoy it, however if you have a cat this would definitely be a good buy and very cheap too!Brought it for my blind dog who loves it.Some of our puppy's toys don't last very long anymore as she loves to chew them, this ball is lasing her though!It is a firm ball and it bounces well, the bell is not high pitched or too loud so is not annoying and the light yellow colour makes it is easy to spot.