If you're looking for manga similar to Soratobu Penguin, you might like these titles.
A comedic manga series about a penguin named Beckham Kinoshita who attends Kirikabu Elementary School and likes to eat hamburgers and hot chips.
Three penguins who got into the human society. Work part-time for food delivery on a tricycle, or give up microphones to each other at karaoke. A loose manga about penguins who live at their own pace and humans who are swayed by them!!
In a certain secret bar, the “Penguin Gentlemen” work, wearing their long tailed tuxedos. “You say it's cute how penguins waddle around? Hmph. We're not just cute! We're dandy, sexy, and marvelous!”
Harry is a hedgehog who wants to be hugged. Garu is a wolf who looks intimidating but has a kind heart. Peta is a penguin who wants to fly. These three, alongside many more characters, walk through life as they try to reach their goals.
Pen is a penguin. His favorite things are pancakes and fastidious household upkeep. Pen lives in the city with his friend Hayakawa, a human. They can’t communicate in words, so the only way for Pen to express his love is by doing laundry and getting good deals at the supermarket.
Miyu, who was doing a live radio broadcast from under the sea, said, "Listeners to the broadcast, I have just discovered a strange little machine-like object at the bottom of the sea." When she turned on the device, the ice expanded and formed a large ring. Penguin children playing in the ice circle. The children's play was also broadcast live, but their number was decreasing before they knew it ...? A mysterious radio broadcast in the shining aurora borealis of the Antarctic Ocean. Why don't you listen to it too?