Jinata's "educated guess" is that this detrimental treatment contributed to his propensity to walk around on two feet.
"With this living condition it's not surprising that he's malnourished, which is shown by how short his legs are and the body size is disproportionately small for his head size. He is much smaller than an adult Asiatic black bear of his age should be," Jinata writes on her blog, Holiztic Vet.
"Before his current place was turned into a rescue center, it functioned as a zoo where visitors could feed him and other bears by throwing food from outside the fence. With his smaller and malnourished body, it is easier for him to stand on his hind leg because his spine can support his light body weight. Standing up and waiting for food slowly became a habit which he does on a daily basis now," Jinata continues.