15CM
No one can truly answer this question because all snake species grow to a different length and weight
The length of a Corn snake can be up to 72 inches.
Adults can reach a length of 3 metres.
Garder-snake; multi color green, yellow and black stripes length of body.
A snake
The average gestation length for a snake is about 60 days (2 months)
The poisonous Western Tiger snake, found in southern parts of Australia including Tasmania, can grow to 2.1 metres in length.
A reticulated python at 33ft in length. The longest snake is the Reticulated Python, found in Indonesia. The record length for an adult "retic" is believed to be around 30ft. No measured and documented specimens of this length have been found, however.
The Grass snake (Natrix natrix) grows to a typical length of around 39 inches for a female (males are slightly shorter) The smooth snake (Coronella austriaca) only gets to an average length of around 20 inches.
2 meters
Construct it from either plywood or chipboard. It should be at least as long as the length the snake will be as an adult - and a minimum of half the length of the adult snake front to back.