People living in West Bengal are least tolerant towards animals and Punjabis happen to be among the friendliest as far as their behaviour towards animals is concerned.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/wb-most-cruel-animals
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/animal-cruelty
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife-and-people
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-environment-and-forests-moef
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal