Copyright: bagi the monster of mighty nature

https://en.wikipedia.org/wiki/Bagi,_the_Monster_of_Mighty_Nature

"Bagi, the Monster of Mighty Nature (大自然の魔獣バギ Daishizen no Majū Bagi) is an anime movie that premiered on the Nippon Television network on August 19, 1984. It was written by Osamu Tezuka as a critique of the Japanese government's approval of recombinant DNA research that year."

Spoilers

"Deep in the South American jungle, a Japanese hunter named Ryosuke (Ryo for short), and a local boy named Chico, stalk a monster that has been terrorizing the local countryside. Ryo, however, is quite familiar with this beast, and the story flashes back to his childhood.

Teenage Ryosuke Ishigami, the delinquent son of a crime reporter and a geneticist, is out with a motorcycle gang when they encounter a mysterious woman. Some of the rougher members of the gang accost her, and she turns out to be anything but normal, landing the gang with serious injuries. The gang leader returns to the woman's hideout for revenge, but the gang members are torn apart, except for Ryosuke.

The woman, named Bagi, turns out to be a "cat-woman" – a cross between a human and a mountain lion. She recognizes Ryosuke as the boy who had rescued her and raised her as a kitten. As Bagi grew and people became suspicious of the precocious "cat", who was able to walk on her hind legs and even learned to write her own name and speak, she escaped and grew to adulthood on her own."