How big does a Portuguese water dog get?
A full-grown Portuguese water dog is a medium dog, weighing about 35–55 lb as an adult.
- Adult weight
- 35–55 lb
- Also in kilograms
- 16–25 kg
- Size class
- Medium
As a medium breed, a Portuguese water dog reaches its adult weight earlier than a large dog — smaller breeds finish growing sooner (Hawthorne et al., 2004).
Weight varies within the Portuguese water dog by sex, genetics and health, and mixed-breed dogs fall between their parents. This is a typical range, not a guarantee.
Verified on . Based on Wikidata — dog breed mass (property P2067) (Wikimedia Foundation, requête du 2026-07-22, licence CC0) and Body-Weight Changes during Growth in Puppies of Different Breeds (Hawthorne et al., Journal of Nutrition, 2004, vol. 134, p. 2027S). See the method.