Images from Pixabay.com 
terms: https://pixabay.com/en/service/terms/#usage

badsnake.png
https://pixabay.com/en/snake-river-panorama-landscape-1087712/

badsnake2.jpg
https://pixabay.com/en/snake-river-teton-mountains-range-883548/

badsnake3.jpg
https://pixabay.com/en/snake-river-rocks-wilderness-idaho-922336/

goodsnake.jpg
https://pixabay.com/en/grass-snake-snake-snakehead-yellow-379025/

goodsnake2.jpg
https://pixabay.com/en/snake-zoo-macro-animal-171655/

goodsnake3.jpg
https://pixabay.com/en/emperor-snake-boa-snake-501569/

snake.png
https://pixabay.com/en/snake-reptile-lizard-nature-145409/