给定一段英文文本，对其中的每个单词进行标注，标注出它们是名词、动词还是形容词。


Unlike many animals, dogs can vary greatly in appearance from one breed to another. For example, long-haired and short-haired dogs come in many sizes and colors, as do wrinkly and smooth-coated dogs.
Nouns: animals, dogs, appearance, breed, sizes, colors, wrinkles, smooth-coated dogs.
Verbs: vary, come. 
Adjectives: many, long-haired, short-haired, wrinkly.