In Comics
"The Wild Wonders" in the 1970s British comic book series Valiant are two boys lost on a Scottish island and raised in a normal environment, developing their own language. Returned to human civilization at about a decade old, they become superb athletes and enjoy many comic adventures.
In "Fishboy", written by Scott Goodall, (1968 - 1975 in Buster), the hero of the title was abandoned on a remote island as a baby, implausibly learned how to breathe underwater and to communicate with aquatic fauna, and grew webbed fingers and toes.
Goodall also created "Kid Chameleon" (1970–1972) in Cor!! Raised by reptiles in the Kalahari Desert after the murder of his parents, Kid Chameleon wears a suit of lizard scales that can change colour to camouflage him like his namesake the chameleon.
The French comic book (bande dessinée) Pyrénée (1998), by Regis Loisel and Philippe Sternis, features a girl who is raised by a bear and taught wisdom by a blind old eagle in the French Pyrenees, the bear having named her after the mountains. This story has won critical acclaim and has been translated into German and Dutch, but has also drawn some criticism over the girl's nudity.
Little Dee, is a webcomic where a prevocal human who was lost in a forest is adopted by a bear, dog, and vulture. The strip contains purely fantastic elements (the characters live in a cave but occasionally fly planes or cook food) and focuses more on the natives and their issues of handling a human.
In DC Comics' Elseworlds story Superman: The Feral Man of Steel (1994), Kal-El (Clark Kent) is raised by wolves in 19th century India, in an homage to The Jungle Book, until he is discovered by an expedition led by Lex Luthor and Lois Lane and brought back to Britain.
In the Marvel Comics universe, a Tarzan-inspired character Ka-Zar is raised by a sabertooth tiger in the Savage Land, a vast tropical jungle hidden from the world in the depths of Antarctica. He goes on to have many adventures, including features in the popular X-Men series.
The Quality Comics hero Black Condor, was a boy raised in Mongolia by highly intelligent condors, gains the improbable power of flight and later becomes a superhero. Secret Origins #21 revealed that Condor's flight ability was due to a radioactive meteorite near the condors' nest.
Holyoke Publishing's hero Cat-Man was orphaned at a young age and raised by Burmese tigers. He adapted to life in the wild by developing super-strength, enhanced vision, and other talents which served him well when he returned to the USA and became a superhero.
The Hexagon Comics hero Zembla was a boy raised by lions.
Cassandra Cain, the third Batgirl, was raised by her father David Cain to be the perfect assassin, taught to read body language instead of learning human speech and isolated from anyone who might talk to her until she was eight years old. In her initial appearances she was unable to speak, capable of picking up combat skills easily and predicting opponents' moves in a fight simply from the way they stood but unable to understand spoken language, but has since been shown to have learned how to speak and think in English with help from a psychic 'rewiring' her brain to accept language.
Read more about this topic: List Of Fictional Feral Children