Andres Rodriguez shot this creature dead on January 1st, 1986, in Sinaloa, Mexico out of fear that the animal would attack him. Rodriguez expected the big cat to be either a puma or a jaguar - the two large cat species in Mexico. He brought the body to a naturalist who examined it. The creature was the color of a puma, yes, but the limbs are too long and the body is too slim. This naturalist claimed that the cat is Mexico’s legendary large cat - the Onza. The Onza has been reported for centuries as a tawny colored cat with oddly long limbs.
The body was sent to a lab and was subject to many tests that revealed that the feline was not just a malnourished puma - in fact, it had a perfect amount of body fat. It was not a crossbreed of two different species either. But the genetic tests did tell that it had no genetic difference from a normal puma. It is thought that the Onza is just a puma with a slight appearance change from normal.