How to use: First, you can start your role - play as a dog owner with the Barbie doll. When it's feeding time, fill the bowl with icy cold water and give it to the young puppy to see the color - change effect on its face. For the larger puppy, fill the bottle with cold water and watch it pee on the pee pad. To reverse the color - change, use warm water. Open the side door of the pet carrier and put the puppies inside to take them home. You can also use the mealtime pieces, pet bed, and leash for more play scenarios. Note: This product is not suitable for children under 36 months because of small parts. The doll can't stand on its own, and keep in mind that the colors and decorations might be different from what you see. Maintenance: Keep the set clean by wiping the accessories with a soft, damp cloth. Store the set in a dry place to avoid damage to the color - change technology.