Akira Shigino

Who has what it takes to be the baddest of the bad. It's evil versus evil as teams of bad guys compete to be the meanest villains ever. Watch and laugh as the Dorombo Gang and their Kitchen Robot take on the worst of the worst in a wacky race to be the greatest villains in anime history. The only force that stands in their way are the superheroes of anime. (animenewsnetwork.com)

Spank is a dog whose owner went missing on the high seas. While awaiting his return he meets Aiko Morimura, a student, whose father went also missing and who lives with her uncle, Mr Fujinami. In the course of the anime Spank begins to lighten up her gloomy mood as he is a clumsy and merry dog with lots of heart. (en.wikipedia.org)

Shin-chan's parents become animals after they drank something Shin-chan brought home.

From a bleak future, Shin-chan sends a girl named Tamiko on a mission to bring his five-year-old self to that time period right before being captured. Reaching the past, she claims to be Shin-chan's bride and takes him and his friends on a wild adventure to try to save the world to come. (Wikipedia)

Oyone, who moved into a group home for senior citizens, forms a band with the other elderly residents. She relives the memories of her youth through a concert on Christmas night.