The series aired on Kids Station on October 6th, 2003 and ended on April 1st, 2004.
The anime has over 26 episodes, all 26 episodes ran for 4 minutes.
The puppies Ryoku, Hana, Chai, Aru, and friends have small every-day adventures that teach lessons like the importance of listening, fair competition, and sharing, with an emphasis on tea
Ryoku: Ryoku can usually be found sleeping somewhere, pretty much anywhere and at any time. Ryoku has a very sensitive nose which alerts him when some delicious green tea has been made "just right."
Ron: Ron is a very mysterious little dog. He has the ability to find Ryoku with ease even when no one else knows where he is. Ron can also understand the weather.
Aru: Aru loves adventures. This ambitious little red dog is very influenced by heroes on TV and wants to be a hero himself.
Muha: Energy is something Muha always seems to have. When there is hot weather and everyone is relaxing, Muha is running around having fun.
Hana: Hana is the only female member of the tea dogs. She likes flowers a lot and always seems to be in a good mood.
Chai: Chai is a rather pale looking dog, but that doesn't reflect his personality at all. He is often doing silly things and making a bit of trouble. Chai is very fond of pudding although he can be very picky about what he eats.
Even though the anime is over, The Ocha-Ken brand still lived on and even spawned 3 games for the Game Boy Advance (all 3 are in Japan Only)
- Ochaken no Heya [released on December 19th, 2003]
- Ochaken Kururin: Honwaka Puzzle De Hottosho? [released on October 28th, 2004]
- Ochaken no Yumebouken [released on April 28th, 2005]
There's also a Ocha-Ken game for the Nintendo DS in the works, slated for sometime in 2006.