Rowan Sanderson sits down with Dr. Brendan Clarke to explain how to use a measuring stick to track your puppy’s growth. This is a key tip that will help you determine when it’s time to make the switch from puppy food to adult food.

There comes a point when a puppy reaches the peak of growth. At this stage, their nutritional needs change. If you continue to feed them “puppy levels” of food, you’ll end up with an obese dog.

Watch as Brendan demonstrates his simple but efficient method to determine precisely when your dog has reached its adult size.