The Panthera onca would be expected to look similar to a mountain lion. There are several reasons for that. First, the lion and the onca are both cats. In fact, they belong to the cat family due to the pores they have. In addition, the animal is specially related to the tiger. This is also a cat species. In addition the mountain lion is lighter in color. This, can also be likened to the rania onca. Thus, due to the properties above, the animals are most likely to be similar.