A couple of days ago I took this photo of the collection that has a zoo, it is a rattlesnake, which is rolled up and ready for the attack, of course this is not possible since it is behind a glass, which is not It allows you to attack people. I leave a small description.
Rattlesnakes (Crotalus) are a genus of the subfamily of pit vipers within the vipéridos family. They are poisonous and endemic snakes of the American continent, from the southeast of Canada to the north of Argentina. All species except one, C. catalinensis, are easily recognizable by the characteristic sound of its rattle which is at the tip of the tail. Do not confuse this genus with the smallest species of the genus Sistrurus, which also have a rattle, but not so developed. 29 species of rattlesnakes have been recognized.