Estimate adult weight

Why growth monitoring matters

WALTHAM growth charts are designed to help spot puppies that are growing too fast, too slowly or drifting away from a healthy curve. That is why repeated weigh-ins beat a single dramatic estimate.

Call your vet if…

Your puppy is losing weight, failing to gain steadily, seems lethargic, has ongoing digestive upset, or shoots upward in weight and body condition much faster than expected.

Puppy growth FAQs

How accurate is a puppy adult-weight prediction?
It is an estimate, not a promise. WALTHAM’s growth-chart tools are designed for monitoring healthy growth trends and predicted adult weight over time, not for treating one reading as absolute truth. Sources: WALTHAM Puppy Growth Charts; WALTHAM complete guide to puppy growth charts (PDF)
When do puppies stop growing?
It depends on size. Purina notes that maturity can fall anywhere from about 6 to 24 months depending on breed size, while The Kennel Club explains that larger dogs reach adulthood later than smaller dogs. Sources: Purina UK, “When do dogs stop growing?”; The Kennel Club, “Puppy food to adult food”
Why does the size class matter so much?
Because growth speed is not the same across all dogs. Small breeds reach adult size much earlier, whereas large and giant breeds continue maturing for longer and need a slower trajectory. Sources: The Kennel Club, “Puppy nutrition”; Purina UK growth article
How often should I weigh my puppy?
Regularly. PDSA recommends adjusting food as your puppy ages and weighing them to monitor growth, while The Kennel Club points owners toward growth charts to keep a record over time. Sources: PDSA, “Your dog’s diet”; The Kennel Club, “Feeding your puppy or dog”
What if growth suddenly jumps or stalls?
Treat that as useful information, not a nuisance. WALTHAM’s chart guidance notes that sharp changes in direction may signal overfeeding, underfeeding or a growth problem worth investigating. Source: WALTHAM Puppy Growth Chart notes (PDF)
Does neutering timing affect growth discussions?
It can, which is why the right timing should be discussed with your vet rather than set by a generic rule. PDSA and VCA both frame neutering timing as an individual decision based on the dog and the owner’s goals. Sources: PDSA, dog adolescence and neutering timing; VCA, planning for neuter