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Nervousness is also common in animals with large areas of depigmented hair and skin.
For example, dairymen report that mostly white Holstein cows are more nervous and difficult to handle for milking compared to more pigmented cows. Pure white animals (and people) have more neurological problems than dark-skinned or dark-furred animals, because melanin, the chemical that gives skin its color, is also found in the midbrain, where it may have a protective effect. Dalmatians with the highest ratio of white fur to black are getting close to true albinism.
There is no breeder who can tell you they are “breeding for temperament” who can overcome this effect and still be breeding a Dalmatian with a spotted coat.
Shyness, erratic behavior, and biting are NOT caused by “backyard breeders” who don’t care about temperament, they are caused by ALL Dalmatian breeders who care more about the unique coat than they do temperament.
In fact they are caused by under-breeding and founder effects.
The gene pool of Dalmatians is so small that the gene which causes uric acidosis / hyperuricosuria / high uric acid (HUA) /urate stone disease / bladder and kidney stones / urinary obstruction is SATURATED and homozygous in every dog in the breed.
The pervasive issue with urinary stones can be solved by changing very little of what we understand a Dalmatian to be (just one gene out of 19,300 need change), but the pureblood brigade is resisting the only fix for this universal problem (every dog in the breed has two copies of the bad gene), as it would require violating their fundamentalist and inane orthodoxy of breed purity.
Herefords are a high-producing beef breed that are reddish-brown with a white face and belly. There are many good horses with white socks and a blaze, but every horseman in the last century noticed a relationship between piebaldism and the value of a horse. That’s an enormously high number considering how rare dog bites are in comparison to the number of dogs living with humans. The temperament issues persist and blanket the breed because the breed is defined by their mostly white coat and it’s a sine qua non feature.
It has nothing to do with the dogs being bred in a puppy mill or a mansion.
It’s caused by the predominance of white in the Dalmatian coat caused by the extreme piebald allele (sw).
ALL Dalmatians are susceptible to acquiring coat-related deafness and the more extreme the whiteness, the greater chance of deafness; i.e.