Long Coat - Genetic Problem?

[fizban]

He's asking someone to translate, so (someone has to pay my translator bill ):

Originally Posted by wolflinx

When you have a log haired dog you usually have a dog with less undercoat (compared to a short haired dog) and the longest the hair is the less undercoat is produced.. in this way the dog is less adaptable to cold winters and torrid summers.
There's nothing scientific in stating that long hair is to be linked with better or worst character, the only researches on character/hair are about the color - some researches proved that mild character is linked with nut-brown colors.