The eastern diamondback rattlesnake is North America's longest, heaviest venomous snake, averaging 3-6 feet long, with some adults growing up to 8 feet. Before deciding to kill a snake in your yard or garden, consider the many benefits of snakes. The threat level to these snakes depends on the species. Like a cats eye, poisonous snakes have thin, black, vertical pupils surrounded by a yellow-green eyeball while non-venomous snakes have rounded pupils. Garter snakes are usually harmless but seeing them in your garden can be frightening. While it can be hard to see from a distance, it is an easily distinguishing feature. Deadly venomous snakes and eyes, vertical and circular pupil, many Again, mind the gap between you and the specimen. For example, it's true that vipers do have elliptical pupils (also called cat eyes or slit pupils). What is the difference between a constrictor and a viper? This guide is meant to help educate you about the beautiful snakes of Naples, and to help you identify the most common snakes of Naples, as well as the venomous snakes of Naples that you should learn to recognize and avoid. How can you tell if a snake is venomous? Most U.S. snakes arent venomous, but rattlesnakes, coral snakes, water moccasins and copperheads all have venom glands. True vipers pupils are vertical slits. Do all poisonous snakes have pointed heads? The venomous species include five pit vipers and the coral snake. Snake Characteristics | Kentucky Snake Identification ; source https://www.catsworldclub.com/do-all-venomous-snakes-have-cat-eyes/, Everything you wanted to know about cats. There are many different types of venomous snakes in the world and they are found on every continent except for Antarctica. They live in many areas close to human habitation. What is the most venomous snake in the world? The vast majority of Texas snakes are non-venomous and completely harmless.