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Megalon
Mar Member 2015

Megalon

Posts: 247 Silver Posts by user Forum Profile RuneMetrics Profile
One of the only vertebrate species that can't yawn is the giraffe. Because of the great distance between the head and both heart and lungs, giraffes have special adaptations for breathing and blood circulation that may obviate the need for yawning.

15-Aug-2019 19:20:40

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