Oscar's Oasis is a computer-animated series of shorts that ran from 2008 to 2011. In the United States, it can be found on Nintendo Video and Netflix. It focuses on a lizard named Oscar and a trio of desert animals with similar goals - searching for whatever can help them survive.
Witness the Fitness (S01E75)
Popy and Buck train Harchi to exercise when they find that he has become fat and lazy.