Genghis is Clara Godfrey's dog who somewhat looks like her.
At some point, Genghis was bought by Clara Godfrey. When her student Nate Wright encountered him, Genghis made an attempt to bite him. Wright was appalled, as he was good with canines, but when Godfrey showed up he realized his mistake. Francis suggests that Genghis is a product of Clara's environment.
Behind the Scenes
He first and as of now only appeared on May 8, 2011. His name is a reference to Mongol Empire leader Genghis Khan, a reference to Mrs. Godfrey's occupation as a social studies teacher.