The Lagotto Romagnolo versus the Portuguese Water Dog is one of the most interesting breed comparisons you can make — two medium-sized, curly-coated, low-shedding working dogs with ancient water-retrieving heritage, both now popular as intelligent family companions. Yet they are genuinely different dogs, shaped by distinct histories and optimised for different working styles. This guide gives you the honest, detailed comparison you need to make the right choice. For the full Lagotto picture, start with our Lagotto Romagnolo breed page.

Quick Comparison Overview

Feature	Lagotto Romagnolo	Portuguese Water Dog
Origin	Romagna region, Italy	Portugal (Algarve coast)
Original role	Water retriever → truffle hunter	Fishing boat helper, water retriever
Size (male)	43–48 cm, 13–16 kg	50–57 cm, 16–25 kg
Coat	Thick, curly, woolly — low-shedding	Wavy or curly, profuse — low-shedding
Energy level	High, especially mental	High, especially physical
Trainability	Intelligent, independent streak	Intelligent, highly biddable
Primary strength	Nose work, scent detection, truffle	Obedience, agility, water sports
Alone tolerance	Low — attachment-oriented breed	Moderate — slightly more independent
FCI group	Group 8 (retrievers, flushing dogs)	Group 8 (water dogs)

History and Heritage

Lagotto Romagnolo: From the Wetlands to the Truffle Woods

The Lagotto Romagnolo’s origins lie in the wetlands of Italy’s Romagna region, where for centuries the breed served as a water retriever for wildfowl hunters. When the Romagna marshes were drained in the 19th century, the Lagotto’s role transformed entirely: its exceptional nose redirected from birds to truffles. Today the Lagotto is the world’s only breed specifically selected and recognised for truffle hunting — a distinction that shapes its character fundamentally. The nose, the independence, the persistent searching drive are all truffle-heritage traits, not simply generic “working dog” qualities.

Portuguese Water Dog: The Fisherman’s Partner

The Portuguese Water Dog (Cão de Água Português) worked alongside fishermen on the Atlantic coast of Portugal, performing a remarkable range of tasks: retrieving lost gear, herding fish into nets, swimming between boats to carry messages, and serving as a guard dog on board. The breed was critically endangered by the mid-20th century — brought back from near-extinction through the dedicated efforts of Vasco Bensaúde and later American preservation efforts. The PWD is now well-established internationally, boosted significantly by the Obama family’s White House adoption of two PWDs (Bo and Sunny).

Size and Physical Build

The Lagotto Romagnolo is a compact, square-built medium dog — males 43–48 cm, females 41–46 cm; weight 13–16 kg. It is built for endurance in rough terrain, with a broad chest and strong hindquarters ideal for working hillsides and woodland.

The Portuguese Water Dog is noticeably larger — males 50–57 cm, females 43–52 cm; weight 16–25 kg for males. It is built for swimming, with a strong neck, deep chest, and webbed feet that make it exceptionally powerful in water. If living space or handling ease is a consideration, the Lagotto’s smaller size is a practical advantage.

Coat Comparison

Both breeds are genuinely low-shedding, making them among the better options for allergy-sensitive households. However, their coats differ in maintenance requirements:

Lagotto Romagnolo coat: Thick, woolly, tightly curled. Does not shed significantly. Requires brushing 2–3 times per week to prevent matting, bathing every 4–6 weeks, and professional clipping every 8–12 weeks. The wool-like texture means mats form quickly if maintenance is neglected. See our Lagotto grooming guide for full detail.

Portuguese Water Dog coat: Two coat varieties — wavy (with a slight sheen) and curly (tighter, denser). Neither shed heavily. The PWD’s coat grows continuously and requires regular trimming; two traditional clips exist — the “lion clip” (rear half shaved) and the “retriever clip” (even length). Professional grooming every 6–8 weeks is typical. The wavy variety is generally somewhat easier to maintain than the curly.

For allergy sufferers, both breeds are similar in allergen distribution. Neither is truly hypoallergenic. Visit in person before committing. See our Lagotto hypoallergenic guide for the full picture on low-shedding breeds and allergies.

Temperament Comparison

Lagotto Romagnolo Temperament

The Lagotto is an affectionate, sensitive, and deeply people-oriented dog with a strong independent working streak. It bonds intensely with its family — sometimes one person in particular — and does not tolerate prolonged isolation well. Its truffle-hunting heritage means it is highly nose-driven: given the opportunity, it will investigate every interesting scent in its environment with genuine focus. This independence makes it highly rewarding to train with the right approach but occasionally frustrating for owners expecting instant obedience. The Lagotto is rarely aggressive; it is sensitive rather than tough. See our temperament guide for the full profile.

Portuguese Water Dog Temperament

The PWD is typically described as exuberant, athletic, and highly engaged with its family. It is often more physically boisterous than the Lagotto — particularly in puppyhood and early adulthood. The PWD bonds strongly with its family but tends toward slightly more even independence than the Lagotto, making it marginally better at coping with periods of solitude. It is playful, often clownish, and typically sociable with strangers and other dogs. The working-dog drive manifests as a strong desire to be physically active rather than the Lagotto’s more nose-focused approach.

Exercise Requirements

Both breeds need substantial daily exercise — this is not an area where either breed offers an “easy” option:

Lagotto Romagnolo: 60–90 minutes of daily exercise, with the most important component being mental stimulation. Nose work, tracking, and problem-solving activities matter as much as physical mileage. A Lagotto that has been walked but not mentally engaged is not a properly exercised Lagotto.

Portuguese Water Dog: 60–90 minutes of daily vigorous exercise, with a strong preference for swimming, fetch, and physically demanding activity. The PWD is more physically driven than the Lagotto and genuinely benefits from swimming where accessible. An under-exercised PWD is a boisterous, potentially destructive dog.

Both breeds excel at dog sports — agility, obedience, tracking. The Lagotto has a unique advantage in nose work and scent work disciplines; the PWD has an edge in physically demanding sports and water work.

Trainability and Training Approach

Both breeds are highly intelligent. The difference lies in their working style:

The Lagotto applies its intelligence independently. When searching for truffles, it works alone, making its own decisions about where to go and what to investigate. This independence is a genuine asset in nose work and a mild challenge in formal obedience — the Lagotto occasionally prefers its own solution to the handler’s preferred one. Training works best with high-value rewards, short sessions, and positive methods that make compliance the dog’s idea. Force or harsh corrections work against the breed’s sensitive temperament.

The PWD is more classically biddable — designed to take direction from fishermen and respond quickly to handler cues. It tends to engage more readily with formal obedience training and can achieve competition-level precision more readily than most Lagotti. For owners who want a dog that is highly responsive to commands and performs consistently in formal training environments, the PWD has an edge.

Both breeds respond poorly to harsh or punitive training. Both require consistent, positive, engaging methods.

Family Compatibility and Social Behaviour

Both the Lagotto and the PWD are excellent family dogs when properly exercised and engaged. Key differences:

• With children: The Lagotto’s sensitivity means it can be gentle and patient with older children who interact respectfully, but may find the unpredictable handling of toddlers stressful. The PWD’s physical robustness and higher energy make it a more enthusiastic playmate for older active children, but its exuberance can accidentally knock smaller children over.
• With other dogs: Both breeds are generally sociable. The PWD tends to be more openly social with unfamiliar dogs; the Lagotto can be more selective, forming strong preferences for familiar dogs.
• With strangers: The PWD is typically more openly friendly. The Lagotto can be somewhat reserved initially before warming up — it is an alert watchdog but not a guard dog.

Health Comparison

Both breeds are generally healthy with good lifespans (12–15 years for Lagotto; 11–13 years for PWD). Key breed-specific conditions:

Lagotto Romagnolo: Benign Juvenile Epilepsy (BJE), Lagotto Storage Disease (LSD), hip dysplasia. DNA testing for BJE and LSD is standard in responsible breeding. See our health guide for full details.

Portuguese Water Dog: Progressive Retinal Atrophy (PRA), Storage Disease (similar to LSD in mechanism), hip dysplasia, juvenile dilated cardiomyopathy (JDCM). Responsible breeders test for these conditions. The PWD Storage Disease (GM1 Gangliosidosis) is a severe neurological condition; DNA testing eliminates risk.

Both breeds benefit significantly from purchasing from health-tested parents. Avoid sources that cannot produce current DNA test certificates for both parents.

Cost Comparison

Both breeds sit in a similar price range from responsible breeders:

• Lagotto Romagnolo: €2,000–€3,200 purchase price; €2,000–€4,000 annual ongoing costs. See our Lagotto price guide.
• Portuguese Water Dog: €1,500–€2,800 typically in Europe; slightly higher from imported lines or show-quality dogs. Annual costs broadly similar to the Lagotto.

Which Breed is Right for You?

Choose the Lagotto Romagnolo if:

• You are interested in nose work, tracking, or truffle hunting
• You prefer a slightly smaller, more compact dog
• You want a deeply loyal, sensitive companion with a distinctive working heritage
• You are based in Luxembourg or Belgium — the Lagotto’s truffle instinct has genuine real-world application in local woodland
• You enjoy the challenge of working with a dog that thinks independently

Choose the Portuguese Water Dog if:

• You want a more physically exuberant, athletic dog for water sports or active outdoor activities
• You prefer a dog that excels at formal obedience and responds to commands with high precision
• You want a slightly more socially open dog with strangers
• You have access to swimming and want a genuine water dog
• You want a somewhat more independent dog that tolerates solitude slightly better

Frequently Asked Questions

Do Lagotto Romagnolo and Portuguese Water Dogs shed equally?

Both are low-shedding breeds, but neither is completely non-shedding. The Lagotto’s tight, woolly curl tends to trap shed hairs within the coat (causing mats if not brushed out) rather than distributing them around the house. The PWD behaves similarly. Both require regular grooming to remove shed hairs. For households with significant allergies, both are good options but should be tested with direct contact first.

Can a Lagotto or PWD live in an apartment?

Both can adapt to apartment living with sufficient daily exercise — but neither is an ideal apartment dog for inactive owners. The PWD’s greater physical energy makes apartment life a slightly larger challenge. The Lagotto’s need for mental stimulation (which can be partially met indoors via nose work games) gives it a marginal advantage in less-active households, though both breeds require substantial outdoor exercise regardless.

Which is better for allergies — Lagotto or Portuguese Water Dog?

Both are similar in allergen distribution. Neither is allergen-free. The Lagotto’s slightly smaller size means somewhat less total dander. Individual variation between dogs matters more than breed-level generalisations. Visit dogs of both breeds and assess your personal reaction before deciding.

Which breed is easier to train — Lagotto or PWD?

The Portuguese Water Dog is generally more biddable and easier for formal obedience training. The Lagotto requires more creative, nose-work-focused training approaches and can be more stubborn with purely obedience-based exercises. However, the Lagotto excels — sometimes surpasses the PWD — in scent-based activities. “Easier” depends entirely on what you want to train.

Conclusion

The Lagotto Romagnolo and the Portuguese Water Dog are both extraordinary breeds — intelligent, low-shedding, deeply bonded to their families, and capable of exceptional working partnership. The choice between them comes down to your lifestyle, your training ambitions, and the kind of relationship you want with your dog. The Lagotto offers a uniquely intimate, nose-led working relationship; the PWD offers athletic exuberance and high formal trainability.

If the Lagotto’s truffle heritage, compact size, and distinctive character appeal to you, explore our Lagotto Romagnolo puppies for sale page and read our complete breed guide.