I have a 10 year old chocolate lab and he has bad anxiety. Whenever anyone comes over, one of his pack leaves, and if we leave for vacation. The only thing that soothes him is his “crazy head” as we call it. He grabs it and immediately starts suckling on it. His little brother steals it from him and chews it up to get the squeaky out of it. I have bought twenty of them so far and will continue, they last longer than any other toy I have ever purchased. Thanks for making a happy Max!