Mexican West Coast Rattlesnake (Crotalus basiliscus), mouth wide open, West Mexico

aggressive aggressively animal animals attack attacking attacks basiliscus belligerent belligerently close close up close ups closeup closeups coast crotalus fauna feistily feisty gesture green kingdom mexican mexican mexico mouth nature nobody one open opened openly poisonous poisonously rattler rattlers rattlesnake rattlesnakes reptile reptiles reptilia separate separately serpentes shot shots single singly snake snakes snout snouts threaten threatening threatens up ups vertebrata vertebrate vertebrates viper viperidae vipers west wide wild wildlife world