The following are common medium and large dogs:
Dobbin: Short hair? Black is the main color, and the appearance is cool?
Rothwell: short hair, mainly black, and well-muscled?
Lingti: Short hair, black variety, and cool (good temper)?
Belgian shepherd: long hair, black is more common.
Tibetan mastiff (gilded): long hair, mainly black, but difficult to raise?
Labrador: Long hair, black hair and good temper.
Puppy:
Deer dog, Chihuahua, English-French bullfighting, Beijing bus, butterfly
All the above are pure black.
Extended data:
Churchill famously said, "The depression in my heart is like a black dog. It bites me every chance it gets. " After Churchill, black dogs became synonymous with depression in the English-speaking world.
References:
Baidu encyclopedia-black dog