Wonder Pets! is an animated television series created by Josh Selig, who had previously created Oobi for Nickelodeon and Noggin. The series was based on a set of short pilot episodes that Selig wrote and animated between the production cycles of Oobi in 2003.
The series began with two animated shorts called "Linny the Guinea Pig," which acted as a pilot episode. They featured Linny going on adventures set to classical music. Selig first screened the shorts at the wrap party for season one of Oobi. The crew of Oobi was impressed with them and urged Selig to pitch them to a broadcast network. He eventually decided to send the shorts to Nickelodeon executives. Selig called Nickelodeon "a great partner," saying "They're the company that first believed in us when we pitched Oobi, and then they believed in us again on Wonder Pets!." (source)
Three classroom pets set out to assist animals in trouble.
Three seasons, consisting of 62 episodes, were produced.