Animal Sounds Babble BallsŪ has more than 20 different realistic animal sounds; lion, frogs, coyote howl, lots of birds, dog barking, pigs, rooster, lamb, elephant, cow, goat, a cat, and more. Batteries are included! Large ball is 3.25" in diameter. Medium ball is 2.75" in diameter. Small ball is 2" in diameter.