Dog Size Predictor
Predict how big your puppy will get based on their breed, current age, and weight. See growth milestones and when they'll stop growing.
See how big your puppy will grow with our size predictor
Quick Size Guide:
Puppies typically reach 50% of adult weight by 4-5 months. Small breeds finish growing by 10-12 months, while large and giant breeds may continue growing until 18-24 months.
Predict Your Puppy's Adult Size
Understanding Puppy Growth
Puppy growth follows predictable patterns based on breed size. Understanding these patterns helps you ensure your puppy is developing normally and prepare for their adult needs.
Growth Timeline by Size
| Size Category | Adult Weight | Full Growth | 50% Size |
|---|---|---|---|
| Toy | <12 lbs | 8-10 months | ~3 months |
| Small | 12-25 lbs | 10-12 months | ~4 months |
| Medium | 25-50 lbs | 12-15 months | ~5 months |
| Large | 50-100 lbs | 15-18 months | ~6 months |
| Giant | 100+ lbs | 18-24 months | ~8 months |
Factors That Affect Adult Size
Genetics
- * Parents size is the strongest predictor
- * Mixed breeds may vary more than purebreds
- * Males typically 10-15% larger than females
- * Doodle generation affects size variation
Environment
- * Proper nutrition supports healthy growth
- * Overfeeding can lead to unhealthy weight
- * Illness or parasites can stunt growth
- * Exercise affects muscle development
Frequently Asked Questions
How big will my puppy get?▼
You can estimate your puppy's adult size using their current weight and age. A common formula is: Adult Weight = Current Weight / Current Age in Weeks * 52 (for medium breeds). However, growth rates vary by breed size - toy breeds reach adult size by 8-10 months, while giant breeds may grow until 24 months.
When do dogs stop growing?▼
Dogs stop growing at different ages depending on their size: Toy breeds (8-10 months), Small breeds (10-12 months), Medium breeds (12-15 months), Large breeds (15-18 months), and Giant breeds (18-24 months). Most dogs reach their full height before their full weight, continuing to fill out after reaching maximum height.
How can I tell how big my Goldendoodle will be?▼
Goldendoodle size depends on the Poodle parent size: Toy Poodle parent = 10-25 lbs, Mini Poodle = 25-45 lbs, Standard Poodle = 45-90 lbs. Generation (F1, F1B, etc.) also affects size. For the most accurate prediction, consider parents sizes, current puppy weight and age, and use a puppy size calculator.
Does paw size predict dog size?▼
Paw size can give a rough indication of adult size - puppies with larger paws relative to their body often grow into larger adults. However, this is not a reliable predictor on its own. Breed genetics, parents size, and current growth rate are more accurate indicators of final adult size.
How much will my puppy weigh at 6 months?▼
At 6 months, most puppies are approximately 60-75% of their adult weight. Small breeds are closer to 75%, large breeds around 60%. For example, a puppy expected to be 50 lbs as an adult would typically weigh 30-37 lbs at 6 months. Use a growth chart specific to your dog's breed size for accurate estimates.
What affects how big a puppy will grow?▼
Several factors influence adult size: Genetics (parents size is the strongest predictor), breed type (purebred vs mixed), gender (males typically 10-15% larger), nutrition (proper diet supports healthy growth), and health (illness or parasites can stunt growth). Spaying/neutering timing may also slightly affect final size.
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