Portuguese Water Dog vs Rat Terrier

Which dog breed is right for you?

Portuguese Water Dog

Size
35–60 lbs, 17–23 in
Lifespan
11–13 years
Exercise
High
Grooming
Moderate
Good with Kids
Yes
Good with Pets
Yes
Adventurous Athletic Loyal Obedient

Rat Terrier

Size
10–25 lbs, 10–18 in
Lifespan
12–18 years
Exercise
High
Grooming
Low
Good with Kids
Yes
Good with Pets
Yes
Intelligent Curious Lively Sensitive

About the Portuguese Water Dog

The Portuguese Water Dog was developed centuries ago along Portugal's coast, where it served as an indispensable fisherman's companion — herding fish into nets, retrieving lost tackle, and swimming messages between boats. These robust, medium-sized dogs stand 17 to 23 inches tall and weigh 35 to 60 pounds, with a strong, muscular build optimized for swimming. Their coat comes in two varieties — curly or wavy — in black, white, brown, or combinations thereof, and grows continuously like human hair rather than shedding seasonally.

Temperament & Personality

Portuguese Water Dogs are spirited, obedient, and deeply bonded to their families — they thrive on being included in activities and do not do well relegated to the backyard. They are playful and patient with children, typically friendly with other dogs, and possess an enthusiasm for life that is both infectious and demanding. Their intelligence and eagerness to work make them highly trainable, though they need a job or purpose to remain content.

Pros

  • Low-shedding, hypoallergenic-type coat suitable for many allergy sufferers
  • Outstanding swimming ability and love of water activities
  • Highly trainable, biddable, and eager to please
  • Robust health with a lifespan of 11 to 13 years

Cons

  • High exercise demands — needs vigorous daily activity including swimming when possible
  • Coat requires regular professional grooming every 4 to 6 weeks
  • Can become mouthy and destructive if under-stimulated or left alone too long
  • Prone to hip dysplasia, progressive retinal atrophy, and GM1 storage disease

A water-loving, people-devoted companion awaits — explore Portuguese Water Dog listings on Puplister.

About the Rat Terrier

The Rat Terrier is an American original, developed in the early 20th century on farms across the United States by crossing Fox Terriers with Beagles, Whippets, Italian Greyhounds, and other breeds. They come in two sizes — Miniature (10 to 13 inches, 10 to 18 pounds) and Standard (13 to 18 inches, 12 to 25 pounds) — both with a compact, elegant build. Their short, smooth coat is always pied (white with patches of one or more other colors), and President Theodore Roosevelt is credited with naming the breed after his own terrier cleared the White House of rats.

Temperament & Personality

Rat Terriers are intelligent, curious, and remarkably versatile — combining terrier tenacity with a more biddable, people-oriented temperament than many of their terrier cousins. They bond deeply with their families and are generally good with children, often choosing one person as their particular favorite. Rat Terriers tend to be less dog-aggressive than other terriers, though they retain a strong prey drive toward rodents and small animals.

Pros

  • Excellent farm and homestead dog with natural pest control abilities
  • More trainable and less stubborn than most terrier breeds
  • Minimal grooming needs — short coat requires only occasional brushing
  • Generally healthy breed with a long lifespan of 12 to 18 years

Cons

  • Can be diggers — will excavate impressive holes in gardens and yards
  • High energy level requires daily exercise and mental engagement
  • Prone to patellar luxation, hip dysplasia, and cardiac issues
  • May be wary of strangers and needs early socialization to prevent timidity

A Rat Terrier could be the spirited, loyal companion your household needs — find one on Puplister today.

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Portuguese Water Dogs

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Frequently Asked Questions

What is the difference between a Portuguese Water Dog and a Rat Terrier?
The Portuguese Water Dog is 35–60 lbs, 17–23 in sized while the Rat Terrier is 10–25 lbs, 10–18 in sized. They differ in size (35–60 lbs, 17–23 in vs 10–25 lbs, 10–18 in), lifespan (11–13 years vs 12–18 years), and care requirements.
Which breed is better with kids, Portuguese Water Dog or Rat Terrier?
Portuguese Water Dog is generally good with kids. Rat Terrier is generally good with kids.
Which breed lives longer, Portuguese Water Dog or Rat Terrier?
The Portuguese Water Dog has a lifespan of 11–13 years while the Rat Terrier has a lifespan of 12–18 years.

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