Snake Death Sparks Species Identification Debate in Yucatán

José María Morelos — The recent death of a snake in the urban area has reignited the discussion on how to differentiate between venomous and non-venomous species, given the risk posed to the population by the unnecessary killing of these reptiles. The case, which occurred on a property where residents killed a large rattlesnake, once again highlighted the lack of information in the community.

According to Jerico Meléndez Cumí, a biologist specialized in the study of snakes, there are 58 recorded species in the Yucatán Peninsula, of which only five are of medical importance. He noted that many people act out of fear and ignorance, leading to the killing of specimens that do not pose a danger.

The specialist explained that the most relevant local venomous species are the real nauyaca, the Yucatecan hog-nosed nauyaca — endemic to the peninsula —, the Yucatecan cantil or “bone tail,” and the rattlesnake. All of them belong to the viperid group, easily distinguishable by their triangular heads, vertical pupils, and more robust bodies. The true coral snake, from the elapid group, is recognized in this region by its red-yellow-black color pattern, where the yellow touches the red, a rule valid only for the peninsula.

Meléndez Cumí detailed that many snakes mimic the colors of the true coral snake, which confuses those unfamiliar with the local fauna. He indicated that the main recommendation is to remain calm when encountering a reptile, not attempt to handle it, and consult reliable identification sources available on social media and specialized websites.

He explained that the cultural fear of snakes stems from religious beliefs, popular references, and stories that associate them with evil, which has been passed down through generations. He added that this distorted perception contributes to the unjustified killing of animals that perform essential ecological functions, such as rodent control.

The biologist recalled that in José María Morelos, emergency services — particularly Firefighters and Civil Protection — have training and equipment to safely remove and relocate snakes. He recommended calling 911 to request support, emphasizing that the preservation of these reptiles maintains environmental balance and reduces risks in inhabited areas.