Watching masterchef and was touched by a Hindu’s relationship to animals, is the religion this respectful towards animals generally?

This contestant started crying when she had to kill a crab and I found it very touching as I’ve also wondered about crustaceans and humane ways of killing them. Forgive me for my ignorance but I only associate Hinduism with not being allowed to kill cows, but is that level of compassion for animal welfare consistent throughout? I’d love to hear your thoughts on why. (I am all for animal welfare and try to choose products accordingly)