I have a 46 pound Staffordshire bull terrier and this is her favorite toy ever (She gets the Large kong). She doesn't like squeaky toys or stuffed animals, she's food driven. Before work everyday, I put a smear of peanut butter in one of her kongs to keep her entertained when I'm gone. When I know I'll be gone extra long, I'll freeze it (although this does make the kong crack over time) or put a circle cookie in a 2nd kong for her (takes her a day to get out). I highly recommend this product, as long as your dog isn't a destructive dog. If they are, I recommend the black ones.