Based on the available information, Nibble and Nosh appears to be a legitimate business. It offers a dog subscription box service that has received positive reviews. Customers have praised the quality of the dog treats provided, which are described as 100% natural, wheat-free, and low calorie. The company also offers a flexible delivery schedule and donates a portion of each sale to animal charities. However, it's always a good idea to do your own research and read reviews before making a purchase.