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Big Four Venomous Snakes and similar Non-Venomous Snakes.pptx
1. Introduction of ‘Big Four’ Venomous
Snakes
Dr. Vinayak Dhananjay Chavan
Department of Environmental Science,
Fergusson College (Autonomous), Pune.
2. Introduction
• Around 60 Species of Snakes are found in Maharashtra
• Most of them are harmless/ Non-Venoumous
• Today, we’ll see widely occurring four venoumous Species
i.e. Big Four
1. Indian Cobra
2. Common Krait
3. Russell’s viper
4. Saw-scaled Viper
3. Indian Cobra
Length 5ft
Body: Yellow, Dark Brown or Black
Eyeslarge black, round pupil
Feature: Hood, Spectacled mark.
4. Common Krait
Length: 4ft
Body: Blue or Black, Dark
Brown.
Eyes: black
Feature: Large hexagonal
sclaes central dorsal side
5. Russell’s Viper
Length: 5ft
Body: Brown. Stout, round with thin short tail.
Eyes: vertical pupil
Feature: Flat triangular head with small
scales. Three rows of dark brown oval-
shaped marks with border.
6. Saw Scaled Viper
Length: 1-2.5 ft
Body: Pale Brown, white zig-zag pattern
Eyes: large golden, vertical black pupil
Feature: head with small scales, white or pale brown Spear mark.
Body scales with saw like keels
11. Photo credits:
https://commons.wikimedia.org/
Russell’s Viper 1:
Shahid Shaikh, https://commons.wikimedia.org/wiki/User:Dfpindia
Russell’s Viper 2:
Manan Singh Mahadev, https://commons.wikimedia.org/wiki/File:Russell%27s _Viper_(29724423537).jpg
Common Krait 1:
Manoj Karingamadathil, https://commons.wikimedia.org/wiki/File:Bungarus_caeruleus_157751749.jpg
Common Krait 2:
Davidvraju, https://commons.wikimedia.org/wiki/File:Common_krait_.jpg
Common Cobra 1:
Dr. Raju Kasambe, https://commons.wikimedia.org/wiki/File:Indian_Cobra_Naja_naja_by_Dr_Raju_Kasambe_DSCN4991_(17).jpg
Common Cobra 2:
Dr. Raju Kasambe, https://commons.wikimedia.org/wiki/File:Indian_Cobra_Naja_naja_by_Dr_Raju_Kasambe_DSCN4991_(9).jpg
Common Cobra 3:
Jayendra Chiplunkar, https://commons.wikimedia.org/wiki/File:The_Common_Indian_Cobra_or_Spectacled_Cobra_06.JPG
Common Cobra 4:
Jayendra Chiplunkar, https://commons.wikimedia.org/wiki/File:The_Common_Indian_Cobra_or_Spectacled_Cobra_19.JPG
Saw Scaled Viper1:
Shantanu Kuveskar,
https://commons.wikimedia.org/w/index.php?search=Saw+Scaled+Viper&title=Special:MediaSearch&go=Go&type=image
Saw Scaled Viper2:
Vassil, https://commons.wikimedia.org/wiki/File:Echis_carinatus_Gen%C3%A8ve_24102014_1.jpg
12. Photo credits:
https://commons.wikimedia.org/
Rat Snake :
Deepgun,https://commons.wikimedia.org/wiki/File:Indian_rat_snake_from_kottayam_kerala.jpg
Wolf Snake:
Davidraju, https://commons.wikimedia.org/wiki/File:Barred_wolf_snake.jpg
Indian Rock Python:
Pratik Jain, https://commons.wikimedia.org/wiki/File:Indian_rock_python_pratik_dahod.JPG
Common Cat Snake:
Jidneshd,https://commons.wikimedia.org/wiki/File:Common_Cat_Snake.jpg