狗是一种动物用英语怎么说?
dog is a kind of animals.
还是
dogs are a kind of animals.
到底应该怎么说才对呢？dogs are a kind of animal (are 和a不矛盾吗？)能不能说的清楚一些呢？哪位高人出手相助啊？毕人不甚感激！