Yes, age can have an impact on a dog's stretching habits. Puppies tend to have more energy and engage in frequent stretching as they explore their bodies and develop coordination. As dogs age, their muscles and joints may become stiffer, and they may stretch more often to alleviate discomfort or maintain flexibility. However, any significant changes in stretching habits, especially in older dogs, should be evaluated by a veterinarian to rule out age-related health issues.