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Laughing rats, sorrowful elephants, joyful chimpanzees.\xa0The more carefully we observe, and the more we learn about animals, the closer their emotional lives appear to resemble our own.\xa0Most would agree that we should minimize the physical suffering of animals, but should we give equal consideration to their emotional stress?\xa0Bioethicist Peter Singer weighs in. Meanwhile, captivity that may be ethical: How human-elephant teamwork in Asia may help protect an endangered species.\nGuests:\n\n\nFrans de Waal\xa0-\xa0Primatologist and biologist at Emory University; author of \u201cMama\u2019s Last Hug: Animal Emotions and What They Tell Us About Ourselves.\u201d\xa0Watch\xa0the video of Mama and Jan Van Hooff.\n\n\nPeter Singer\xa0\u2013\xa0Philosopher, professor of bioethics at Princeton University.\n\n\n Jacob Shell\xa0-\xa0Professor of geography at Temple University, and author of \u201cGiants of the Monsoon Forest: Living and Working with Elephants.\u201d\n\n\nKevin Schneider\xa0-\xa0Executive director of the Nonhuman Rights Project\n\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices