If you're looking for anime similar to Spy Penguin (2013), you might like these titles.
In tiny Cube Town (a weird and cubistic place, but charming nonetheless), Pecola the penguin and his friends get into all sorts of mischief.
Hop on board another animated adventure with Pororo! The snow fairy village is under siege by a giant lava monster. Can Pororo and his friends save the village?
Chitose is a fluffy Emperor penguin chick living in Kyoto. The stories depict such familiar Kyoto locales as Togetsu-kyou bridge, Arashiyama Bamboo Grove, Fushimi Inari-taisha shrine, and Kiyomizu-dera temple from a penguin's perspective, as well as Kyoto cuisine.
Pingu and his family move from their small village to a big city, where there are many people with many different occupations. The ever-curious Pingu tries to join them at their jobs, but his mischievous side gets the better of him and he ends up messing things up.