While Kenner Toys produced the vast majority of Care Bears for the world in the 1980s, in South America the rights were given to at least two different companies; Cromy (Argentina)
and Estrela (Brazil). Estrela also did the 2000's release of Care Bears in Brazil, however they had good quality control so I've not seen many
"strange" bears from there.
From my searches, it appears that Cromy produced the vast majority of toys in Argentina in the 1980s. While being a majory toy company, either they had very loose guidelines or very poor quality control because the Care Bears that come out of Argentina greatly vary in consistency, even on the same bears, as you will see in the pictures below.