The narrow-headed garter snake and northern Mexican garter snake dwell in riverbeds of Arizona and southern New Mexico along the Gila River.

TUCSON, Ariz.—The Center for Biological Diversity sued the U.S. Fish and Wildlife Service today for reducing critical habitat for two endangered snakes in Arizona and New Mexico by more than 90% from ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...

One of the world’s most endangered amphibians – the primordial and fish-like axolotl – has successfully adapted to a new environment after being released into artificial wetlands in Mexico ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...

A group of hikers ventured into a mountainous rainforest in southern Mexico on a humid night. Around 1 a.m., they encountered a 2-foot-long snake moving through the leaves — and found a deadly ...