Sky and Yak:
Greek Grass Snake - (Natrix natrix persa).
Sky and Yak:
Grass Snake - (Natrix natrix helvetica) and Slow Worms (Anguis fragilis) under artificial cover.
Sky and Yak:
Greek Grass Snake - (Natrix n. persa)
Sky and Yak:
Greek Grass Snake - (Natrix n. persa)
Sky and Yak:
Greek Grass Snake - (Natrix n. persa)
Sky and Yak:
Grass Snake - (Natrix natrix helvetica)
Sky and Yak:
Barred Grass Snake (Natrix helvetica)
Sky and Yak:
Barred Grass Snake (Natrix helvetica)
Sky and Yak:
Adder (Vipera berus) and Grass Snake (Natrix natrix)
Sky and Yak:
Adder (Vipera berus) and Grass Snake (Natrix natrix)
Sky and Yak:
Grass Snake (Natrix natrix)
Sky and Yak:
Grass Snake (Natrix natrix)
Sky and Yak:
Juvenile Grass Snake (Natrix natrix)
Sky and Yak:
Greek Grass Snake - (Natrix n. persa)
Sky and Yak:
Grass Snake - (Natrix natrix helvetica)
Sky and Yak:
Greek Grass Snake (Natrix n. persa)
Sky and Yak:
Grass Snake - (Natrix natrix helvetica)
Sky and Yak:
Grass Snake Feigning Death (Natrix natrix helvetica)
Sky and Yak:
Grass Snake Feigning Death (Natrix natrix helvetica)
Sky and Yak:
Grass Snake - (Natrix natrix), UK.
Sky and Yak:
Grass Snake (Natrix helvetica)
Sky and Yak:
Grass Snake (Natrix helvetica)
Sky and Yak:
Grass Snake (Natrix helvetica)
Sky and Yak:
Grass Snake (Natrix helvetica)