The Amazon is made up of two separate basins — the large southern Amazon basin and the "much smaller" northern Orinoco basin.

"The southern green anaconda (Eunectes murinus) is found across a vast range spanning Brazil, Bolivia, Perú and parts of French Guiana," he said.

"By contrast, our newly described northern green anaconda (Eunectes akayima) is restricted to Colombia, Ecuador, Guyana, Suriname, Trinidad, Venezuela and parts of French Guiana."

Water snakes and semi-aquatic snakes enjoy the lakes in Arkansas. In particular, Greers Ferry Lake, Lake Ouachita, and Lake Fayetteville are popular spots for snakes. Despite the abundance of snakes, these Arkansas spots are still worth a visit. For outdoor enthusiasts, these lakes offer many activities to enjoy, from camping and hiking to fishing and kayaking. Visiting these spots is comforting because water snakes are usually harmless to humans. While semi-aquatic snakes can be venomous, identifying them can help you stay safe in snake territory.

New research by myself and colleagues estimated the magnitude of that benefit. We found adult eastern brown snakes can collectively remove thousands of mice per square kilometre of farmland each year, which substantially increases farm productivity.
Our study suggests the benefits of snake populations on agricultural land far outweigh the potential costs, and farmers should tolerate rather than kill them.
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Agricultural productivity gains are not the only benefits of tolerating brown snakes on farmland.

It would also allow a reduction in the use of chemical methods for rodent control, which can be expensive and ineffective. The chemicals can also threaten the health of humans, livestock, scavenging wildlife and pets.

Tolerating brown snakes might also reduce the incidence of snake bite. Most snake bites are inflicted when people are trying to catch or kill the reptile.