Venomous and Non venomous snakes

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

7. Indian Cobra
Rat Snake

8. Common Krait
Wolf Snake

9. Russell’s Viper
Rock Python

10. Saw Scaled Viper
Common Cat Snake

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

13. Thank You