1. Laboratory of Quantitative Neuromorphology, Neuroscience Program, Colorado College , Colorado Springs , CO , 80903 , USA
2. Foundation to Support Animal Protection , Norfolk , VA , 23510 , USA
3. Performing Animal Welfare Society , P.O. Box 849 , Galt , CA , 95632 , USA
4. Palladium Elephant Consulting Inc. , 2408 Pinewood Dr. SE , Calgary , AB , T2B1S4 , Canada
5. Department of Psychology , University of Washington , Seattle , WA , 98195 , USA
6. Whale Sanctuary Project , Kanab , UT , 84741 , USA