Erin Hunter is a collective pseudonym used by the several authors like Victoria Holmes, Kate Cary, Cherith Baldry, Inbali Iserles, Tui T. Sutherland, Kasey Widhalm and Rosie Best, in the writing of several juvenile fantasy novel series, which focus on animals and their adventures.
The name "Erin Hunter" was chosen for several reasons. First, if the authors used all of their own names, the books would be placed in different places in a library, making them hard to find. Second, they were trying to pick a surname that would place the books very close to the Redwall series by Brian Jacques, which was, at the time, the book series with the closest plot to Warriors.
"Erin Hunter is inspired by a love of cats and a fascination with the ferocity of the natural world. As well as having a great respect for nature in all its forms, Erin enjoys creating rich mythical explanations for animal behavior, shaped by her interest in astrology and standing stones."