United Pet Club
Ca de Bou — a Large, Protective Dog breed originating in Spain

Ca de Bou

The Ca de Bou is a powerful, protective Mallorcan mastiff that is calm and devoted with family while standing as a confident guardian.

Size
Large
Lifespan
10–12 years
Origin
Spain
Temperament
Protective
Standard colors
Black and Fawn
Key Traits
ProtectiveCalmLoyalConfidentCourageous

Characteristics

Energy Level3
Trainability5
Good With Kids3
Good With Pets3
Grooming Needs2

Coat and grooming

How the Ca de Bou coat is built, and what that means when you groom it.

Coat layers
Single coat
Coat texture
Smooth
Coat length
Short
Shedding
Moderate shedding

Ca de Bou colors and patterns

What each club's breed standard says about every Ca de Bou color and pattern. Point at a ruling to see the club's own wording.

Breed standards describe the Ca de Bou in Black and Fawn. Standard patterns: Brindle and Reverse brindle.

Coat: rulings by club
Color or patternFCIUKC
BlackStandard (“black”)Standard (“black”)
FawnStandard (“fawn”)Standard (“fawn”)
Patterns
BrindleStandard (“Brindle, fawn and black, preference in this order”)Standard (“Brindle, fawn and black, in that order of preference”)
Reverse brindleStandard (“Brindle, fawn and black, preference in this order”)Standard (“Brindle, fawn and black, in that order of preference”)
Eyes: rulings by club
Color or patternFCIUKC
Dark brownStandard (“as dark as possible and according to coat colour”)Standard (“as dark as possible depending on the color of the coat”)
Light brownDisqualifying (“Light or yellow eyes”)No ruling
YellowDisqualifying (“Light or yellow eyes”)Disqualifying (“Yellow eyes”)
Nose: rulings by club
Color or patternFCIUKC
BlackStandard (“Black and broad”)Standard (“Black and broad”)

What the rulings mean

Standard
Described by the club's breed standard.
Disqualifying
The club's breed standard disqualifies an animal of this colour or pattern.

Color changes

How a Ca de Bou's colors can change over its life.

  • Blackchanges toRust

    Coat · With body condition · can change back

  • Blackchanges toGrey

    Coat · Progressive

  • Blackchanges toBrown

    Coat · In the sun · can change back

  • Blackchanges toSnow nose

    Nose · With the season · can change back

  • Blackchanges toPink

    Nose · With the season · can change back

Sources

Each ruling comes from the club's published breed standard or color list.

About the Ca de Bou

The Ca de Bou is a large Spanish mastiff breed from Mallorca, steady and devoted at home yet a confident, watchful guardian around strangers.

The Ca de Bou is a large molosser-type dog that developed on the Spanish island of Mallorca. The name comes from Catalan and translates roughly as "bull dog", a reference to the work the breed once did with cattle and in baiting contests. It is also known as the Perro de Presa Mallorquin or Mallorquin Mastiff.

This is a heavily built dog with a broad head, strong jaws and a muscular frame slightly longer than it is tall. Despite its imposing build, a well-raised adult is steady and quiet indoors. The breed is calm, loyal, protective, courageous and confident, and owners often describe a dog that watches rather than reacts, holding back until there is good reason to step in.

The Ca de Bou bonds closely with its own family and is usually patient with children it has grown up with. It stays reserved and alert around strangers. Its guarding instinct is natural rather than trained, so early socialisation and consistent handling from puppyhood matter a great deal.

Ca de Bou quick facts
AttributeDetail
OriginMallorca, Spain
SizeLarge
Lifespan10 to 12 years
Group / roleMolosser, guardian and family companion
Good withFamily and familiar children; reserved with strangers

Who the breed suits

The Ca de Bou suits an owner with time for daily training and socialisation, someone comfortable managing a strong, protective dog. It does best in a home with secure outdoor space and family members around often, which usually rules out HDB flat living for this breed. First-time dog owners may find it demanding, since its size and guarding nature call for confident, consistent handling from day one.

History and origin

The Ca de Bou developed on Mallorca from old molosser and bulldog stock, once used with cattle and in baiting, before Spanish breeders revived the type in the 1900s.

The Ca de Bou hails from Mallorca, one of Spain's Balearic Islands off the country's eastern coast. Its ancestry goes back to old Iberian molosser and mastiff-type dogs, crossed over generations with bulldog stock. The breed developed as a working animal, used to control cattle and guard property and livestock on the island.

During the period when animal baiting was practised, dogs of this type were pitted against bulls in contests, which is where the name Ca de Bou comes from. Breeders valued the strong jaws, broad chest and determined character this work called for. Once baiting was banned, numbers of these dogs fell sharply and the type nearly died out.

Through the twentieth century, Spanish breeders worked to recover and stabilise the breed using the dogs that remained on Mallorca. The standard was set to fix the molosser build, the brindle and fawn coats, and the calm guarding temperament. Internationally, the breed is recognised under the names Ca de Bou, Perro de Presa Mallorquin and Mallorquin Mastiff.

Today the Ca de Bou is kept mainly as a guardian and family companion rather than for baiting work. It remains an uncommon sight in Singapore and across Southeast Asia, though a small circle of owners here appreciates a large protective breed with a measured, level temperament.

Appearance and breed standard

The Ca de Bou is a large, powerfully built molosser with a broad head, short coat and brindle, fawn or black colouring.

The Ca de Bou has a compact, muscular body slightly longer than it is tall. The head is large and broad, with a strong, deep muzzle and well-developed jaws. The skin around the neck and head can be a touch loose, and males typically carry heavier cheek and head development than females. The overall impression is one of strength and balance rather than bulk for its own sake.

Breed standard at a glance
TraitStandard
HeightMales about 55 to 58 cm; females about 52 to 55 cm at the withers
WeightMales about 35 to 38 kg; females about 30 to 34 kg
CoatShort, harsh, close-lying single coat
ColoursBrindle, fawn and black
EyesOval, dark, set wide and somewhat deep

Coat and colours

The coat is short and harsh to the touch, lying flat against the body, which keeps grooming simple. Accepted colours are brindle, fawn and black, with brindle the most commonly seen. A small white patch on the chest and front feet is permitted under the standard. The short coat gives little insulation against cold, which is not much of an issue in Singapore's climate, but it also means the dog can overheat quickly in our heat and humidity, so owners need to manage exercise and shade carefully.

Temperament and personality

The Ca de Bou is calm and devoted at home, reserved with strangers, and a confident natural guardian that rarely acts without good reason.

The Ca de Bou is known for a steady, self-assured temperament. Indoors it is usually quiet and undemanding, content to rest near its people. The breed forms strong attachments to its family and is generally gentle and patient with children it has grown up with, though its size means adults should still supervise young children around it.

With strangers the dog stays reserved and watchful. It is not usually nervous or quick to bark, but it notices changes and tends to place itself between its family and anything unfamiliar. This guarding behaviour is instinctive, which is why early and ongoing socialisation with people, places and other animals matters from a young age.

How it gets on with other pets depends largely on upbringing. A Ca de Bou raised alongside other dogs and animals can live with them without issue, but same-sex aggression and a strong prey drive toward small animals can surface without careful introduction. The breed does best with a confident owner who sets clear, consistent rules without resorting to harsh handling.

Trait ratings (1 = low, 5 = high)
TraitRating
Affection4
Energy3
Trainability3
Vocalness2
Shedding2

Care and grooming

The Ca de Bou needs little coat care but daily moderate exercise, secure outdoor space and steady company, best suited to landed housing rather than a flat.

Day-to-day care of a Ca de Bou is fairly light on the grooming side and heavier on exercise and management. The short coat is easy to maintain, but the breed's size and guarding nature mean it needs structure, activity and plenty of time with its people.

Grooming

  • Brush the coat once a week with a rubber grooming mitt or short-bristle brush to remove loose hair.
  • Bathe only when needed, roughly every two to three months or when the dog gets dirty.
  • Check and clean any skin folds around the face and neck to keep them dry, especially given Singapore's humidity.
  • Trim nails every three to four weeks and check ears for wax or odour.
  • Brush teeth several times a week to support dental health.

Exercise

  • Provide two walks a day, plus time in a secure yard or garden if available.
  • Aim for about 45 to 60 minutes of activity daily.
  • Include training games and scent work for mental stimulation.
  • Avoid hard running or jumping in puppies while their joints are still developing.
  • Exercise during the cooler parts of the day, early morning or evening, and cut sessions short in the midday heat, since the heavy build raises the risk of heat stress.

Environment

The Ca de Bou suits a landed property with a securely fenced garden far better than an HDB flat or condominium unit. Its size and exercise needs make high-rise living a poor fit, and many housing estates in Singapore in any case restrict larger guardian breeds. The dog wants to be near its family and can grow frustrated if left alone outside or isolated for long stretches, particularly in our climate where outdoor time needs shade and water on hand.

Nutrition and feeding

The Ca de Bou needs a balanced large-breed diet fed in measured meals, controlled growth as a puppy, and care to avoid bloat and toxic foods.

A Ca de Bou does well on a complete diet formulated for large breeds, with protein and fat levels matched to its age and activity level. Because the breed is heavy and prone to joint strain, keeping it at a lean weight matters more than feeding for maximum size. Puppies should grow at a steady, controlled rate on a large-breed puppy food rather than being pushed to grow quickly.

General feeding guide
Life stageAmount per dayMeals
Puppy (2 to 6 months)About 300 to 500 g, by growth and food type3 to 4
Junior (6 to 12 months)About 400 to 550 g2 to 3
Adult (1 year and older)About 350 to 500 g2
Senior (8 years and older)Adjusted down for lower activity2

Treats and supplements

Keep treats to about 10 percent of daily calories and factor them into the day's total when measuring meals. Joint supplements containing glucosamine and chondroitin may help a large dog as it ages, and omega-3 fatty acids support skin and coat condition. Always keep clean water available, which matters even more in Singapore's heat. Feeding two smaller meals rather than one large one, and holding off on hard exercise right after eating, lowers the risk of bloat, a real concern in deep-chested breeds. Check with a vet before adding any supplements.

Health and common conditions

The Ca de Bou usually lives 10 to 12 years and is fairly hardy, though joint, eye and heat-related problems are seen in the breed, as in most large molossers.

The Ca de Bou is generally a robust breed with a typical lifespan of 10 to 12 years. As with most large molossers, the main health concerns involve the joints, the heart and heat tolerance, the last of which needs particular attention in Singapore's climate. Buying from breeders who screen their breeding dogs lowers the chance of inherited problems.

Conditions seen in the breed
ConditionSignsNote
Hip dysplasiaStiffness, limping, trouble risingCommon in large breeds; screen breeding stock
Elbow dysplasiaFront-leg lameness, reduced movementLinked to growth and genetics
EntropionEyelid rolling inward, eye irritationMay need surgical correction
Bloat (gastric torsion)Swollen abdomen, retching, distressMedical emergency; act at once
Heat sensitivityHeavy panting, weakness in warm weatherLimit exertion in heat

Preventive care

  • Keep vaccinations and parasite control up to date, and register the dog with AVS as required.
  • Schedule annual vet checks, more often for senior dogs.
  • Maintain a lean body weight to protect the joints.
  • Ask breeders for hip and elbow screening results.
  • Watch for early signs of joint or eye trouble and act on them promptly.

Training and socialisation

The Ca de Bou is intelligent and capable but independent, so it does best with early socialisation and calm, consistent positive training.

The Ca de Bou is intelligent and learns well, but it has an independent streak and will test boundaries with an inconsistent handler. It responds to a calm, confident owner who sets clear rules and applies them the same way every day. Harsh or forceful methods tend to backfire with this breed and can damage trust. Because the guarding instinct runs strong, socialisation matters as much as obedience: a dog that has met plenty of people, other dogs and different situations early is far easier to manage once it reaches full size.

Basics

  1. Begin socialisation and handling from the first weeks at home.
  2. Teach name response and a reliable recall early.
  3. Work on loose-lead walking before the dog reaches full size and strength.
  4. Establish a solid sit, down and stay for control in public spaces such as void decks and parks.
  5. Practise calm greetings so guarding instinct does not tip into reactivity.
  6. Keep sessions short, positive and consistent across the household.

Breeding and raising young

The Ca de Bou reaches breeding maturity around two years, carries an average litter of six to eight pups after a 63-day pregnancy, and needs health-tested parents.

Responsible breeding of the Ca de Bou centres on health-tested parents and stable temperament. Dogs are usually bred once they are physically and mentally mature, generally from about two years of age, by which point hip and elbow screening results are available. Mating follows the normal canine cycle, with females coming into season roughly twice a year.

Pregnancy lasts about 63 days. Litters average six to eight puppies, though larger litters do occur. The mother needs a quiet, warm whelping space and increased nutrition through the later weeks of pregnancy and while nursing. Because of the breed's broad heads, some litters may need veterinary support at whelping, so planning the birth with a vet's guidance is a sensible move.

Puppies should stay with the mother and littermates until at least eight weeks of age. Early handling, gentle exposure to household sights and sounds, and the first stages of socialisation during this period shape the calm, confident adult the breed is known for.

Breeding facts
MetricValue
Breeding maturityAbout 2 years
Cycle frequencyRoughly twice a year
GestationAbout 63 days
Average litter size6 to 8 puppies
Weaning ageAbout 6 to 8 weeks
Leave for new home8 weeks or older

Licensing done? Now register your Ca de Bou and its chip

AVS handles the licence; United Pet Club keeps a free, searchable record behind your Ca de Bou's microchip for life.

Registering a Ca de Bou in Singapore

An AVS licence satisfies the rules; it does not tell a finder in another country how to reach you. Your Ca de Bou's free United Pet Club profile does exactly that, pairing your mobile with his photo and chip number for life. Register your dog once and the record follows him anywhere.

The AVS listing and a searchable contact record are two different things, and the second one is yours to set up. Register the microchip on the free lifetime plan: any chip brand a local vet implants qualifies, updates after a move between flats stay free, and the record can be pulled up 24 hours a day from anywhere. Create your free account and settle it tonight.

How do I register my Ca de Bou in Singapore?

Set up a free United Pet Club account, key in your Ca de Bou's details and a photo, and save. The lifetime plan keeps the profile live at no cost for as long as he is with you, alongside whatever AVS requires.

How do I register my Ca de Bou's microchip?

Key the 15-digit chip number into your free account together with your address, mobile, and email. The lifetime plan covers the registration and every update free, whichever brand the clinic used.

Is a microchip compulsory for a Ca de Bou in Singapore?

Yes. AVS requires dogs to be licensed and microchipped by three months of age. The licence is the legal part; a registered, searchable record with your current mobile is the part that gets a lost Ca de Bou home, and that part is free.

How much does it cost to register a Ca de Bou?

Nothing. United Pet Club's lifetime plan covers the profile, the chip record, and unlimited updates, with no renewal, ever.

Frequently asked questions

Common questions about the Ca de Bou cover its size, temperament, care needs, lifespan, suitability for families, and how to find one in Singapore.

How big does a Ca de Bou get?

It's a large breed. Males stand about 55 to 58 cm at the withers and weigh around 35 to 38 kg, while females are a little smaller at about 52 to 55 cm and 30 to 34 kg.

What is the Ca de Bou's temperament like?

It is calm, loyal and confident. The breed is devoted and usually quiet with its family, reserved with strangers, and a natural guardian that watches before it acts.

Is the Ca de Bou hard to take care of?

Grooming is simple thanks to the short coat, but the breed needs daily exercise, a secure home, early socialisation and consistent training. Its size and guarding nature add up to a fair amount of work for the owner.

How long do Ca de Bou dogs live?

The typical lifespan is 10 to 12 years. Keeping the dog lean, screening for joint problems and regular vet visits support a healthy life.

Is the Ca de Bou good with families and kids?

Yes, with the right upbringing. It is generally patient and gentle with children it has grown up with, though its size means young children should always be supervised around it.

Is the Ca de Bou suitable for first-time dog owners?

It suits owners with some experience better. A strong, protective guardian needs confident, consistent handling, which can be a lot to take on for someone new to dogs.

Is the Ca de Bou easy to find in Singapore?

It's a rare breed here. Very few litters are bred locally, so most owners look to specialist breeders overseas, mainly in Spain, and need to arrange import and quarantine through AVS before bringing a puppy home.

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