As nouns the difference between dog and flower

is that dog is a mammal, canis lupus familiaris , that has been domesticated for thousands of years, of highly variable appearance due to human breeding while flower is a colorful, conspicuous structure associated with angiosperms, frequently scented and attracting various insects, and which may or may not be used for sexual reproduction or flower can be something that flows, such as a river.

As verbs the difference between dog and flower

is that dog is to pursue with the intent to catch while flower is to put forth blooms.