Join Otto the bulldog and his best friend, Dennis, as they travel through time to learn more about and appreciate two special fathers in history—Abraham from the Bible and Dennis' own dad!

Join Otto the bulldog and his best friend Dennis, as they travel through time to discover the meaning behind our American flag by meeting Betsy Ross, President Truman, and astronauts Neil Armstrong & Buzz Aldrin!

Otto’s Tales books are part of PragerU's educational initiative for students in kindergarten through 12th grade. These beautifully illustrated storybooks star young Dennis Prager and his sidekick—PragerU’s Otto the Bulldog mascot. Dennis and Otto go on exciting adventures and travel through time to learn important values through American holidays and traditions. This stylish series answers the needs of young families looking for fun, educational, pro-America content.