Boa
A snake with a three letter name is a Boa
The name of a poisonous snake with three letters is the adder.
Olive Sea snake
you have the name of a ... snake PYTHON
Olive snake the full name of it is the olive brown sea snake
PYTHON
supreme
python, reptiles
There are many venous snakes. However, one that has six letters is the rattle snake. It is found in desert climates.
Those letters can be used to spell "python", which is the name of both a snake and a programming language.
An eel swims but looks like a snake.
The 3-letter poisonous snake is almost always "asp."