On Second Thought producer Sean Powers has trained his cat Alonso to walk outside on a leash, so he can be outdoors without being unattended. Here's Alonso next to a large dog at a coffee shop in Atlanta.

On Second Thought producer Sean Powers has trained his cat Alonso to walk outside on a leash, so he can be outdoors without being unattended. Here's Alonso next to a large dog at a coffee shop in Atlanta. / On Second Thought

A new book has fueled the indoor-outdoor cat debate by calling for the removal of all outdoor cats by any means necessary. The authors say feral and outdoor domestic cats are a threat to wildlife. We talk about the ethics of cat ownership with NPR animal writer Barbara King, who is an emerita professor of anthropology at the College of William and Mary.

Tags: Barbara King  cats  Pets  Atlanta  Georgia