Do Marine Mammals Yawn and More Questions From Our Readers.

Among marine mammals, pinnipeds, such as seals, do—but cetaceans, such as whales and dolphins, do not.

https://www.smithsonianmag.com/smithsonian-institution/marine-mammals-yawn-more-questions-readers-180969354/

Publicado el 28 de junio de 2018 a las 10:27 AM por biohexx1