Chuckit! The Whistler Ball Dog Toy, Medium (2.5 Inch Diameter) for Dogs 20-60 lbs, Pack of 2, Multicolor

Great for my medium sized dog. Very durable and holds hours of fun!

I have golden retrievers and they love to chew on their balls as they bring them back. These are sturdy and can withstand their loving teeth. Would highly recommend these. I have them on auto-delivery!

These are my favorite balls to get for my dogs. I get these only because they have the whistle holes which helps the dogs follow them when thrown and makes them way more safe for dogs than a traditional ball. They fit into the chuckit thrower just as well as normal ones. You should definitely be getting these for your dog.

Thus is the only ball my dog can't shred in 5 minutes. It lasts a lo g time with my aggressive chewer dog. And, it bounces real well when thrown.

Love it! My dog loves it! The people at the dog park love it! The whistle is the best thing about these balls but the hard durable rubber and the denseness of the ball really make it fly. Let me quickly breakdown each of these: First the sound is like a...well, whistle coming from a human but oscillating and slightly different. It helps the dogs track where it goes and helps them find it better when it is getting dark (while flying of course, not when it is stationary). It barely makes a sound when throwing it with the wind but really howls when throwing it into the wind. This is why you get this ball and most everyone at the dog park perks up and wonders what that is, asks about it, and thinks it is very cool; which it is! Next is the durable rubber which doesn't have a single bite mark or split yet in 4 months of constant daily play for about 1 1/2 hours every day! The dog chews it as he brings it back and other dogs steal the ball and run with it while "killing" it perpetually and it has held up great. I don't claim this is going to be Kong ball durable but it is very well chosen rubber. Last is the denseness of the ball which really makes to go far in a chuckit launcher. One doesn't really notice how far this goes until going back to a tennis ball and realizing how short a tennis ball goes compared to this. The whistler ball, and presumably other chuckit rubber balls (glow, irregular bounce), go 30-40% farther when I throw then using the longest chuckit thrower. This is excellent and wears my retriever out even faster; not to mention the rippling muscles he has from sprinting that whole way! Overall I got both ball several months ago and we started with the blue ball and haven't had to touch the orange one yet. This is his goto ball at the park and it is the most popular ball, bar none, for all the dogs to steal. The bright blue aspect, the rubber aspect, the sound, and exclusivity of it make it coveted by dogs and owners. I might be gushing and glowing over this ball a bit much but I tend to do that when something unexpected ends up being part of your everyday life and blows you away at how wonderful it is.

It doesn't whistle when you throw it like it says it will, but it's a ball and it's blue and it gets 2 paws up from the dog. I have an 80 pound golden and he isn't discriminatory on balls. If it's round and it flys, he's happy. I like it because the ChuckIt products are good and durable. A whistle would be extra fun, but it's a ball and it does the job.

These balls are the only toys that my dog cannot destroy. Even expensive toys made for “aggressive chewers” are easily chewed apart when she has them. These balls last for years without any hints of breakage.

My dog loves this ball, it does whistle better than I thought it would. It fits perfectly in the Chuckit wand, I can easily throw the ball further. I definitely recommend this item