These are my chihuahua's favorite balls ever!! She loves to play fetch and we've tried several brands/kinds of ball, but these still remain #1. She loves the squeaker and that the ball is small and flexible enough to squeeze. She easily gets the squeaker out within ~15 minutes, so just make sure you always supervise your baby with them.
I have a little 15 pound mix and he LOVES to chase all sizes of balls. Most time time he can't fit them into his mouth the play fetch. he has a heavy under bite and gets frustrated with larger balls. These were perfect for him & sturdy. He goes crazy chasing them and carrying them around like a proud puppy! Very high quality!