Content being validated
Adaptation to its size
The head of the giraffe rises to nearly 236 inches (6m) above the ground. Its unusual size has earned it some physiological adaptations. The arteries on its neck are aided by a series of ring muscles that drain the blood to the brain. Conversely, when the giraffe lowers its head to drink, the 9 jugular valves prevent blood from rising to the head.
Read More
Related content

Médias en cours d’exploration