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Natrix natrix persa3.jpg
Natrix natrix
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Natricinae
Tribe: Thamnophiini
Genus: Natrix
Laurenti, 1768

Natrix is a genus of colubrid snakes. They are collectively called grass snakes and water snakes. However, some other snake species known as "grass snakes" and "water snakes" are not of the genus Natrix.

The genus includes: