While no dogs are truly 100% hypoallergenic, Bolo-Tzus are about as close as it gets, making them an ideal pet if you are an allergy sufferer.

Unfortunately, the Pyrenean Mastiff is not hypoallergenic, making it not a good choice for a dog lover who suffers from pet allergies.

Active
Playful
Happy
Courageous
Intelligent
Friendly
Outgoing
Loyal
Devoted
Lively
Gentle
Calm
Faithful
Easygoing
Earnest
Willing
Serene

Gentle
Brave
Noble
Docile
Protective

Bolo-Tzus shed very little hair, making them a great choice for those who dislike excess hair in the house.

Pyrenean Mastiffs shed a lot of hair each year, so frequent brushing is essential for reducing shedding and maintaining coat health.

United States

Aragonese Pyrenees (Spain)

Bolognese, Shih Tzu

Mastiff-type

2000s

1273 A.D.

A Bolo-Tzu can have a litter of 2-5 puppies on average. However, it's worth noting that the size of the litters can vary greatly. Factors that can influence litter size include the health of the mother, breeding history, and genetics.

A Pyrenean Mastiff can have a litter of 8-12 puppies on average. However, it's worth noting that the size of the litters can vary greatly. Factors that can influence litter size include the health of the mother, breeding history, and genetics.

Bolo-Tzus are highly adaptable and versatile, making them excellent companions for families and individuals of all lifestyles.

Pyrenean Mastiffs have average adaptability to changes in lifestyle and living environments compared to other breeds.

While the Bolo-Tzu breed is generally healthy, occasional vet check-ups are still necessary to address any health concerns.

The Pyrenean Mastiff breed is generally very healthy, requiring minimal vet visits. Still, it's important to keep an eye on their health and seek veterinary care when needed.

Hip Dysplasia
Legg-Calve-Perthes Disease

Hip And Elbow Dysplasia
Gastric Dilation Volvulus (GDV) or Bloat

Cataracts
Glaucoma
Optic Nerve Hypoplasia

Entropion
Ectropion

Hip And Eyes
X-Rays
Eye Examination

CERF
Blood And Urine Analysis
OFA on hips and elbows
Full Body Physical Examination

Bolo-Tzu has very high social needs and requires regular mental and physical stimulation, a job or purpose, and companionship.

Pyrenean Mastiff has average social needs and is less independent than other breeds.

Bolo-Tzus are known for their relaxed and calm nature and enjoy long periods of sleep.

Pyrenean Mastiffs have moderate energy levels and typical sleep patterns of 12-14 hours per day.

This breed is sensitive and requires gentle handling and a calm home environment.

This breed is sensitive to its environment and best suited for patient and understanding families with a consistent routine.

Bolo-Tzus make excellent apartment dogs, being fairly active indoors and not requiring a yard.

The Pyrenean Mastiff is not suitable for apartments and requires a large yard to thrive. Pent-up energy in small spaces can lead to destructive behavior.

Bolo-Tzus have an average level of friendliness towards children.

Pyrenean Mastiffs make excellent family pets for kids due to their gentle, protective nature and calm temperament.

Bolo-Tzus are very friendly with cats and make great companions for them.

Pyrenean Mastiffs are average in their friendliness toward cats and tend to do well with them, especially if raised together.

Bolo-Tzus are friendly but may bark at strangers, and training is easy due to their intelligence.

Pyrenean Mastiffs are quick to announce strangers and can be standoffish or suspicious.

Bolo-Tzus have an average level of playfulness, enjoying playtime like most dogs but not excessively so.

Pyrenean Mastiffs are very playful, so adopting an older one might be a better option for a more relaxed experience.

Bolo-Tzus are popular for their ease of training and quick learning ability.

Pyrenean Mastiffs are usually easy to train but require consistency to fully obey commands.