Information about the Webisode:
Title: "Royal Pest Sitter"
Episode: Season 3, Episode 57
Air Date: October 24, 2013 (Released on "13 Wishes" DVD)
Episode Summary: Cleo, Abie, Lagoona, Draculaura and Frankie care for the class pet, but things get out of hand when they don't follow the rules.
Visit the episode Wikia entry.
Information about the Web Series:
Series Description: Monster High is a web series by Mattel to promote their line of fashion dolls. The web series follows the adventures of Frankie Stein, Clawdeen Wolf, Draculaura, Ghoulia Yelps, and other "frighteningly fashionable" teenagers of famous monsters as they go about their daily lives as high school students.
Visit the series Wikipedia Entry / Official Website