My Gym Partner's a Monkey is an American animated television series created by Tim Cahill and Julie McNally Cahill for Cartoon Network. It aired from December 26, 2005, to November 27, 2008, ending with a total of four seasons and 56 episodes. The series follows Adam Lyon, a human who, after a clerical error listed his surname as "Lion", is forced to transfer to Charles Darwin Middle School, a school for local anthropomorphic zoo animals, where he is partnered with Jake Spidermonkey in gym, and quickly becomes best friends with him.