How to Tell if a Snake is Poisonous?

It can be difficult to tell if a snake is poisonous just by looking at. For example, in the United States, there are coral snakes that have colored bands. Some species have black and red bands, while others have red and yellow ones. One specie is poisonous while the other is not. So, unless you do your research for a specific area or country by looking in books or for illustrations on snakes, you may not be able to tell for certain if it is a poisonous snake. For more information look here: