They can get quite large, depending on where you are in the world. South America has ones that get 12 inches long and are venomous. I believe India also has s

They can get quite large, depending on where you are in the world. South America has ones that get 12 inches long and are venomous. I believe India also has some fairly large and venomous ones. I don't know if any of the centipedes in the continental US are problematic like that or not.