Dogs that are merle and prone to health issues

Want to know more about dogs that are merle and prone to health issues? See all the dogs that fit this criteria and learn more about what it's like to have these dogs as pets.

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  • breed group: herding
  • breed size: medium (26-60 lbs.)
  • other traits: easy to train, easy to groom, tendency to chew, prone to health issues, high prey drive, loves water, cold weather tolerant, hot weather tolerant, strong loyalty tendencies, good hiking companion
  • colors: red, blue, black
  • patterns: tricolor, bicolor, merle
  • coat length/texture: medium
  • temperament: friendly, willful, outgoing, playful
Australian shepherds are intelligent, loyal, energetic dogs that love spending quality time exploring with their owners. Learn more about living with Aussies.
  • breed group: hound
  • breed size: small (0-25 lbs.)
  • other traits: easy to groom, tendency to chew, prone to health issues, highly territorial, high prey drive, high potential for weight gain, apartment-friendly, strong loyalty tendencies, good hiking companion
  • colors: black, red, blue, cream, fawn, brown / chocolate / liver
  • patterns: bicolor, sable, brindle, flecked / ticked / speckled, spotted, merle, blue and tan, black and tan, liver and tan
  • coat length/texture: short, long, wiry
  • temperament: friendly, willful, outgoing, playful, aggressive
Easily recognized by its long body on stubby legs, the small and spunky dachshund has long been a family favorite. Learn more about living with doxies.
  • breed group: toy
  • breed size: small (0-25 lbs.)
  • other traits: easy to train, prone to health issues, high prey drive, high potential for weight gain, loves water, apartment-friendly, good for first-time pet owners, strong loyalty tendencies, good hiking companion
  • colors: red, black, brown / chocolate / liver
  • patterns: bicolor, tuxedo, brindle, saddle / blanket, merle, black and tan, harlequin, hairless, spotted, sable, blue and tan, tricolor, flecked / ticked / speckled, liver and tan
  • coat length/texture: short, medium, long
  • temperament: outgoing, friendly, playful, anxious
Brussels griffons are smart and friendly little dogs with tons of personality, perfect for families or households of just about any size—including those with other dogs or cats. Learn more about living with Brussels griffons.
  • breed group: toy
  • breed size: small (0-25 lbs.)
  • other traits: easy to train, easy to groom, prone to health issues, apartment-friendly, good for first-time pet owners, strong loyalty tendencies
  • colors: brown / chocolate / liver, black, gray, blue, white, fawn
  • patterns: bicolor, tricolor, brindle, merle, black and tan, liver and tan, blue and tan
  • coat length/texture: short, long
  • temperament: gentle, anxious, playful
Chihuahuas are charming, smart, and sassy. Small in size, but big in personality, Chihuahuas are beloved by owners for their unique appearance and entertaining attitudes. Learn more about living with this pint-sized breed.
  • breed group: toy
  • breed size: small (0-25 lbs.)
  • other traits: requires lots of grooming, prone to health issues, high potential for weight gain, apartment-friendly, good for first-time pet owners, strong loyalty tendencies
  • colors: black, gray, red, blue, cream, white, fawn, gold / yellow, brown / chocolate / liver
  • patterns: bicolor, tricolor, hairless, sable, saddle / blanket, brindle, flecked / ticked / speckled, spotted, harlequin, tuxedo, merle, black and tan, liver and tan, blue and tan
  • coat length/texture: long
  • temperament: gentle, friendly, willful, aloof
Pekingese are intelligent, affectionate, and friendly. These compact lion-maned dogs were first bred as companions for Chinese emperors. Learn more about living with Pekingese.
  • breed group: working
  • breed size: extra large (101 lbs. or more)
  • other traits: easy to train, easy to groom, prone to health issues, highly territorial, good for first-time pet owners, strong loyalty tendencies
  • colors: fawn, black, blue, gray, white
  • patterns: bicolor, brindle, harlequin, merle
  • coat length/texture: short
  • temperament: gentle, friendly, outgoing, playful, protective
Great Danes are enormous, gentle dogs that love spending time with their family, whether on walks or lazing at their elbows. Is this gentle gargantuan dog breed right for you?