They're all Beta vulgaris, the way black Labradors and golden retrievers are all dogs.
都是甜菜属，就像黑拉布拉多犬和金毛都属狗类。
What health problems are Labradors prone to?
拉拉容易出现哪些健康问题？
Yellow Labradors are often mistakenly called "golden Labradors."
人们经常把黄拉拉误称为金拉拉。
Interestingly, in comparison to other breeds, such as Goldens, there are relatively few Labradors in obedience competition.
有趣的是，与其他各类的犬（如金毛）相比，拉拉很少参加服从性的比赛。
If your main purpose in getting a dog is to have a guard dog, a Labrador is not a good choice, but if you want an "alarm" barker, most Labradors are fine.
如果你养狗的主要目的是警卫，那么最好不要选择拉拉。但如果你只想让狗儿在必要时提醒你一下，大部分拉拉都能做到。
There are yellow Labradors that are so pale they appear white, but they are still considered to be yellow and will usually have some color, even if it is only on the ear tips.
有的黄色拉拉颜色接近白色，但至少在耳尖处会有些黄色，所以仍被归为黄拉拉。
There are yellow Labradors that are so pale they appear white, but they are still considered to be yellow and will usually have some color, even if it is only on the ear tips.
有的黄色拉拉颜色接近白色，但至少在耳尖处会有些黄色，所以仍被归为黄拉拉。
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