Chuckit 'The Whistler' Medium Ultra Ball - 2 Pack By Chuckit

The balls hold up well to chewing and the whistle is definitely audible even at a distance. Good purchase

The whistling sound makes this ball incredibly exciting for my dog. Great for chasing and retrieving

Good value for two high quality whistling balls. They bounce well and are easy to throw with a launcher

My dog is completely focused on this ball when it's whistling. It's a great mental and physical workout for him

The whistling adds a fun new element to our park time. The balls are as tough as the regular Ultra Balls

They are durable and the whistle works consistently. The sound can be a little annoying but the dog loves it

The combination of the Ultra Ball's durability and the whistling sound is perfect for fetch games. Highly recommend

It makes a nice loud whistle sound when thrown hard. My dog's favorite ball now. Very tough rubber

The whistling sound helps my dog locate the ball when I throw it really far. Excellent quality two pack

The whistle sound really gets my dog excited during fetch. These balls are also incredibly durable