Heather Collins is a new neighbor and one of the main antagonists on Dog With a Blog.
Her family just moved in the neighborhood. She is very stuck up, snobby and mean. She doesn't want to associate herself and her dog Princess with the Jennings-James clan.
Heather proves to be bossy, she kept insulting Avery's designs and making them do do it because she loved her designs but wanted to sell them because she knows people.
Heather also didn't care about Gracie and Freddy. When they were born, Heather was gonna give them when their older, she stated that they were always giving them away. Her parents don't any more dogs and she thinks "mutt puppies" are gross. Proving that she does care about Princess' happiness, she doesn't care for any other dog or any puppies she gives to.
Her family moved from Michigan to Pasadena.
She can't sing, however, she loves performing musicals, just not watching them.
She bought her dog a car.
Her family moved into the Anderson house.
In Stan Has Puppies, Heather stated his father made her vice president of his company for tax purposes.