Our 14 month old miniature Australian Labradoodle loves them. I hold one for 15 minutes each morning so she can chew. She gets it again late afternoon for about 5 minutes. Each stick lasts for two to three days this way. Our vet said her teeth look great. There is no doubt this is her favorite treat by far. In the photo, she is the smaller dog in front. Our Granddaughter's Labradoodle is the larger dog.