Heart Murmur More Condition_symptoms Which Dog Breed Is More Likely To Be Born With A Heart Murmur: Lab, Pit Bull, Or Boxer?

Which dog breed is more likely to be born with a heart murmur: Lab, Pit Bull, or Boxer? - heart murmur more condition_symptoms

Without puppy dog babies born prematurely, was the offspring of undernourished mothers, mothers who have complicated pregnancies, etc.

To say that these puppies a great line, large documents, top breeders, etc., have, the race is more likely to have a heart murmur?