question: What are some fields of knowledge concerning the animal world that have been revolutionizes in the 21st century ?
answer: animal emotions , animal culture and learning
turker_answer: Some fields of knowledge concerning the animal world that have been revolutionizes in the 21st century are animal emotions , animal culture and learning .
rule-based: Some fields of knowledge concerning the animal world that have been revolutionizes in the 21st century are animal emotions , animal culture and learning .