Estimate adult weight from puppy's current weight and age.
Puppies grow at different rates depending on breed size. Toy breeds reach adult weight by 8-10 months; giant breeds may grow until 18-24 months. Simple formula: Adult Weight ≈ Current Weight / (Age in weeks / Mature weeks). At 16 weeks, a medium-breed puppy is roughly 40% of adult weight. Other methods: double the weight at 16 weeks (medium breeds) or at 14 weeks (large breeds). Paw size relative to body is another rough indicator — big paws suggest more growing to do. For mixed breeds, weight at 6 months is approximately 2/3 of adult weight. These are estimates; genetics, nutrition, and health all influence final size.