Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 17 - Think and Explain: 98

Answer

Dogs have no sweat glands (except possibly between the toes, as shown in Figure 17.2). By panting, they cool their mouths and throat by evaporation, which then cools the rest of the body.
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