This is Toola Roola, from the Generation 3 My Little Pony line. This one is one of the 2008 McDonalds Happy Meal toys, with the fancy symbol that extends down her leg. She is approximately 3 inches tall, and comes as shown, loose with no accessories, and with her mane in need of heavy conditioning and grooming. See pictures for details. The quarter shown is for size comparison only, and is not included.
