Our dog came to us loving balls and wanted nothing but that. But after 3 years my wife noticed that her teeth were wearing away. Doing research we realized how bad a regular tennis ball was for her. So I started looking and found these as an alternative. She is extremely obsessed with tennis balls to the point of driving us crazy if one is lost under the couch. So buying something different we were not sure how it would go. She LOVES THESE balls. It was like she had never had a tennis ball before. She carries them everywhere and has not lost a step. And based on what you have said this should save her teeth. THANK YOU!