TheViperine Snake(Natrix maura) is a natricine water snake of the genusNatrix. It is also known as theviperine water snake. Despite its common names, it is not a member of the Subfamily Viperinae.
This nonvenomous, semiaquatic, fish-eating snake was given its common names due to behavioural and aesthetic similarities with sympatric adder species.
It looks like an adder and behaves like one. It is known to strike like an Adder but does not bite. On the other hand, when in water, the Viperine Snake then looks like a Grass Snake and hunts its prey in the same way. The Viperine Snake should really be called the viper grass snake. In the small areas of England where it breeds in the wild it is usually mistaken for an adder and vice versa. This snake is diurnal.
The viperine snake is found in southwestern Europe and nothwestern Africa. Specifically, Natrix maura is found in the European countries of: Portugal, Spain, France, northernwest Italy and even into Switzerland. It has spread to areas of England as well in the some of the southern and western regions. Details of this can be found in this book - snake Dictionary. An A to Z of Amazing Snakes. by Clint Twist (21 Aug 2003). And from further online sites.
It is found in African countries of Morocco, northern Algeria, northwestern Libya, and northern to central Tunisia.