No, her dog is a phrase.
However her is a possessive pronoun
The possessive form is: the dog's footprints
The possessive form for the bark of the dog is the dog's bark.
One dog has a dog's collar.
The possessive form for the noun dog is dog's.Example sentence: The dog's collar has the dog's name in rhinestones.
The correct possessive form for the singular noun dog is dog's.example: My dog's name is Dixie.
The possessive form is the dog's paw.
The form dog's is the possessive form of the singular noun dog.Example: This is my dog. My dog's name is Spot.
The possessive form is: the dog's footprints
The possessive form for the bark of the dog is the dog's bark.
The possessive form is Raina's dog.
The possessive form is the dog's collar.
The possessive form of the singular noun dog is dog's.example: My dog's name is Jack.
The noun dog's is the singular possessive form (one dog, one collar).The plural possessive form is dogs' (The dogs' leather collars).
One dog has a dog's collar.
The possessive form for the noun dog is dog's.Example sentence: The dog's collar has the dog's name in rhinestones.
The correct possessive form for the singular noun dog is dog's.example: My dog's name is Dixie.
The possessive form for "that leash belongs to a dog" is "That is a dog's leash."