Independent
Protective
Alert
Powerful
Courageous
Intelligent
Docile
Reliable
Loyal
Devoted
Fearless
Good-natured
Calm

Active
Playful
Independent
Energetic
Alert
Courageous
Intelligent
Friendly
Affectionate
Loyal
Gentle
Social
Fearless
Cheerful
Quiet
Nonaggressive
Polite
Graceful
Sporty
No tendency towards nervousness

Bull Mastweilers are decent watchdogs - they'll alert their owner if something seems amiss.

Avoid King Charles Yorkies as watchdogs - they're not effective.

Bullmastiff, Rottweiler

Cavalier King Charles Spaniel, Yorkshire Terrier

IDCR = International Designer Canine Registry®
DRA = Dog Registry of America, Inc.

ACHC = American Canine Hybrid Club
DBR = Designer Breed Registry
DDKC = Designer Dogs Kennel Club
DRA = Dog Registry of America, Inc.
IDCR = International Designer Canine Registry®

1990s

2000s

A Bull Mastweiler can have a litter of 4-13 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 King Charles Yorkie can have a litter of 4-6 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.

Bull Mastweilers have average adaptability to changes in lifestyle and living environments compared to other breeds.

King Charles Yorkies are highly adaptable and versatile, making them excellent companions for families and individuals of all lifestyles.

Bull Mastweilers typically have low vet costs due to their good health, but it's important to monitor their health and seek vet care when necessary.

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

Hip Dysplasia
Bloat
Osteochondritis Dissecans

Patellar Luxation
Retinal Dysplasia
Tracheal Collapse
Mitral Valve Disease
Portosystemic Shunt
Syringomyelia

Elbow
Hypothyroidism
Retinal Detachment

Entropion
Progressive Retinal Atrophy
Cataracts
Retinal Dysplasia
Urolithiasis
Hip Dysplasia
Hydrocephalus
Patent Ductus Arteriosus
Color Dilution Alopecia
Microphthalmia
Shaker Dog Syndrome
Corneal Dystrophy
Keratoconjunctivitis Sicca
Hypoadrenocorticism
Legg-Calve Perthes Disease
Cryptorchidism

Hip
Elbow
Thyroid Tests
X-Rays
Physical Examination

Blood Test
Hip X-Rays
Heart
Dna For Pra
Eye Examinations
Full Physical Examination

Bull Mastweiler has above average social needs and thrives with interaction with humans and other dogs.

King Charles Yorkie has very high social needs and requires regular mental and physical stimulation, a job or purpose, and companionship.

Bull Mastweilers need moderate physical activity and are great for families and active individuals.

King Charles Yorkies need only a small amount of physical activity, ideal for busy or elderly people or those with limited space.

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

King Charles Yorkies sleep less than other breeds but still need adequate sleep for good health.

Bull Mastweiler dogs are generally less vocal than other breeds and only bark when necessary, such as to alert their owner or communicate.

King Charles Yorkies are typically quiet and only bark when needed, such as to alert their owner or when in distress.

Fetch, Walk, Tug-of-war, Nap, She loves walks, Walking her, Trail walking, Run, Play, Cuddles, Walks, Cuddle, Daily walks, Dog Parks

Walk, Tug-of-war, Fetch, Swim, Run, Walking, Cuddles

The Bull Mastweiler has low grooming needs and is easy to maintain.

King Charles Yorkies require significant grooming, including regular trims and professional grooming assistance to maintain their coat. They may also require frequent bathing to keep their coat and skin healthy.

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.

Bull Mastweilers are good apartment dogs as long as they get enough exercise and stimulation outside of the apartment.

King Charles Yorkies make excellent apartment dogs, being fairly active indoors and not requiring a yard.

Bull Mastweilers are somewhat cat friendly and can be trained to get along with cats.

King Charles Yorkies are good with cats, but early training is needed to prevent chasing behavior.

Bull Mastweilers are not dog-friendly.

King Charles Yorkies are friendly and active companions, and can be good family pets, though their friendliness towards other dogs may vary.

Bull Mastweilers are quick to announce strangers and can be standoffish or suspicious.

King Charles Yorkies are friendly but may bark at strangers, and training is easy due to their intelligence.

Bull Mastweilers are popular for their ease of training and quick learning ability.

King Charles Yorkies are usually easy to train but require consistency to fully obey commands.