Amphisbaenians are fossorial reptiles with few predators due to their powerful bite and writhing defensive tactics.

[3] However, some snakes have been found feeding on amphisbaenians including A.

[3] This species is also able to defend itself against dangerous predators such as snakes by releasing a foul discharge from its cloacal region.

[3] The specific name, mertensii, is in honor of a Dr. Mertens who collected the holotype.

[4][5] A. mertensii is found in northern Argentina, southeastern Brazil, and eastern Paraguay.