If you're looking for anime similar to Leo the Lion Cub, you might like these titles.
Nobita finds a lost white dog whom he names Peko while his friends desire an adventure somewhere that still hasn´t been explored during their Summer vacation. After some research the five friends and the dog end up going deep into an African jungle just to find out that Peko has a mysterious connection with their destination.
Thirteen-year-old Jackie lives a happy and unusual life with her family in 1964 Kenya, surrounded by exotic creatures, good friends and sunshine. Her brother Andrew and father Arthur spend their time in the bush observing wildlife, but poachers make their lives dangerous – not to mention the occasional charging rhino. When the men witness the death of a mother bush baby, they decide to save its orphaned child, and Jackie finds herself a new companion. What adventures await Jackie and her new friend Murphy?
Doraemon and its friends open a hole in the time and they're travel to the Country of Mayana, a lost Mayan civilization in the jungle. There, Nobita will know its perfect double, prince Thio, heir to the throne. Both will decide to interchange papers to try to save to the Country of Mayana of the claws of the infernal Ledina witch and her evil forces.