The series, which featured the voice acting of Hayley Faith Negrin and Dwayne Hill, was created by Billy Aronson and Jennifer Oxley and produced by Fred Rogers Productions and 9 Story Media Group.

The goal is to "inspire preschoolers’ natural curiosity about math and help them develop new skills and strategies for solving problems creatively in their daily lives".

A new film, titled Peg + Cat Save the World, focused on the duo being called upon by the President of the United States (voiced by Sandra Oh), to prevent a global disaster.

[76] In late 2016, Fred Rogers Productions and 9 Story Media Group signed a deal with the Montreal-based toy manufacturer Imports Dragon to create an assortment of plush, arts-and-crafts sets, games and wooden puzzles based on the Peg + Cat characters.

[77] The toys join numerous books from Candlewick Press, as well as DVDs from PBS Distribution in the U.S., eOne in Canada, ABC Commercial in Australia and Sony Music in Germany.