Follow Aspen Lu as she discovers why kids can't play with all of the dogs they meet. Most dogs are friendly, but sometimes they are off-limits. This engaging story illustrates why some puppies aren't able to play, and the importance of asking before interacting with someone's dog. They could be Friendly, Scared, or Working dogs. Kids will learn what it means when a dog is wearing a special vest. Beautifully illustrated, this story takes readers on a journey to learn about different kinds of canines in their own communities.