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Dennis Learns to Whistle
Dennis is very upset because he doesn't know how to whistle, So he spends all day trying to learn how.
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Other episodes for this season
![Out of Retirement](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Wedding](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Radio Set](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Ham-pher](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Stock Certificate](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Man of the House](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Rock Collection](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Henry and Togetherness](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Paint-up, Clean-up Week](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis Learns to Whistle](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Raffle Ticket](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Christmas Horse](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis' Allowance](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis' Penny Collection](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis, the Campaign Manager](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Miss Cathcart's Friend](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Pythias Was a Piker](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Saxophone](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Wilson Sleeps Over](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis' Birthday](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis Goes to Camp](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis' Tool Chest](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Going Away Gift](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Fishing Rod](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Good Example](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis' Obligation](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Dog Trainer](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Woodman, Spare That Tree](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Boy Wonder](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Soapbox Derby](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Camera](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Miracle Plant Food](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis' Newspaper](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Mr. Wilson's Paradise](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Fortune Cookie](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![The Pioneers](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Father's Day for Mr. Wilson](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
![Dennis and the Picnic](https://image.tmdb.org/t/p/w300/9vFeCjxOJKPkM6HjyvMxP2mZgBR.jpg)
Dennis is very upset because he doesn't know how to whistle, So he spends all day trying to learn how.