The phrase "dog guide" is a noun. The plural would be dog guides.
The word whimper is both a noun and a verb.The dog let out a whimper when I touched him. (noun)The dog whimpers whenever I touch him. (verb)
Noun
A noun
dog
Dog is a noun.
The word dog is a noun.
The word dog is a noun.
The word dog is a noun.
Dog
Dog is a noun, which is a person, place, or thing.
The word bedroom is a noun. It is a room with the purpose of sleeping in.
The phrase "dog guide" is a noun. The plural would be dog guides.
The word dogs is a plural noun. The singular is dog.
"The dog" isn't a sentence because it doesn't have a verb. If you are asking what part of speech it is, "the" is an article, and "dog" is a noun.
Happy is an adjective.
"Barked" is a past-tense verb, of the sound that a dog made.