The Problem

In a recent report from the USGS, findings show that several species of boa, anaconda, and python currently are, or have the potential to be invasive in the United States.  The high-risk species list includes the following:

• yellow anacondas
• northern African pythons
• southern African pythons
• boa constrictors
• Burmese pythons

Currently, the Burmese python poses the greatest risk, in that this species has already reproduced in the tens of thousands.

The Potential Damage

While the thought of “giant” snakes slithering near your neighborhood is not pleasant for some, high-risk snakes like the Burmese python do not pose an immediate threat to humans.  There have been reports of reticulated pythons attacking humans in their native countries, however any real danger of unprovoked human attack from these non-native snakes is very unlikely.

However, scientists are very concerned about the risk that these snakes pose to ecosystems as a whole, and to endangered species specifically.  In Florida, the endangered Key Largo woodrats have already been found to have been eaten by Burmese pythons.

In climate areas where these invasive snakes are likely to appear, native wildlife is in great danger, in that they have never had to contend with such large predators.  The USGS was clear to point out that birds, reptiles, and mammals are particularly vulnerable.

Geographical Snake Forecast

In an effort to predict where these non-native snakes can potentially dwell, the USGS created forecasts, including maps, to illustrate likely habitats.  Currently, northern African pythons and boa constrictors can be found in Miami, Florida, but for one non-native species – the Burmese python –   climates in multiple states can provide favorable living conditions.

According to one forecast map, the Burmese python could inhabit areas in most of the southern continental United States.  Parts of central California, Virgina, and even northern Oklahoma have favorable climates conducive to the survival of Burmese pythons.  By 2100, the favorable climate zones are expected to extend even further north due to the effects of global warming.

The Solution

National wildlife and park agencies are doing all they can to assess the potential danger to the ecosystem that these non-native snakes may cause.  The USGS states that they are working together with The Fish and Wildlife Service and The National Park Service to conduct risk-assessment, and to use scientific evidence to examine the threat of snake colonies.  Agencies will use the 300-page USGS report as a guide for any future regulations.

If you have a non-native snake as a pet, and can no longer care for it, please contact your local wildlife animal or reptile rescue, or try and find your slithery friend another good home.  Releasing a non-native snake into the wild is not only illegal, but also dangerous to your pet, your neighborhood, and to other wildlife.

For more information about the United States Geological Survey report on giant invasive snakes in the United States, please visit the USGS website.

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