Our beautiful shelter pup came to us already addicted to having a tennis ball in her mouth at all times (even when barking!). No other type of ball will do. So when we found Tuff Balls, which last many days longer than an ordinary tennis ball, we gobbled them up. The mint & peanut butter flavors are also a favorite, but she wouldn't care if they were dirt-flavored--she would love them anyway! Pet Guys has the absolute lowest everyday price we have found anywhere, so we order them in bulk! But don't leave them outside for extended periods--dampness will degrade them & they will crack open. We just leave a couple of old ones outside for play time that we don't care about.
Prosdurable, lasts many days longer than ordinary tennis balls