WHAT DO LLAMAS USE THEIR NECKS FOR?
September 10, 2013
One distinguishing feature of the
llama is
its long, woolly neck, which measures nearly the length of its back.
When standing erect, the llama’s neck and mane
make the animal look athletic and regal.
But when the neck is sheared,
the llama looks, well, rather amusing.
Under its gorgeous mane is a shockingly thin neck.
Such long, skinny necks are very
useful.
Llamas use it as a tool to steal leaves, to swing threateningly at predators,
to wrestle with other llamas, and to provide a counterbalance when rising
from a seated or lying position.
Even so, rising is an awkward movement for the llama. This animal experiences locked knees
its long, woolly neck, which measures nearly the length of its back.
When standing erect, the llama’s neck and mane
make the animal look athletic and regal.
Dalai Llama |
the llama looks, well, rather amusing.
Under its gorgeous mane is a shockingly thin neck.
Dalai Llama's Long, Skinny Neck is Revealed! |
Llamas use it as a tool to steal leaves, to swing threateningly at predators,
to wrestle with other llamas, and to provide a counterbalance when rising
from a seated or lying position.
Even so, rising is an awkward movement for the llama. This animal experiences locked knees
until it stretches out. Only then will the front knees bend so the animal can sit down.
Llamas move into the seated position the way a camel does.
Can’t do it? Try swinging your neck to provide some momentum.
That works out beautifully for the llama.
Can’t do it? Try swinging your neck to provide some momentum.
That works out beautifully for the llama.
The most remarkable fact about the
llama’s neck is how enough blood can travel such a great distance from the heart all the way to the head. Llamas accomplish this with ease through specially designed elliptical (oval) blood cells. Most other mammals, including humans, have round blood cells, which are smaller than the llama's. Elliptical cells carry extra blood--and just the right amount to compensate for the length that blood must travel in the amazing llama. These oval shaped cells are also very stable.
In comparison, the world’s
longest-necked animal—the giraffe—has a completely different system for blood
circulation from its heart to its head. With a neck length of six feet, the
giraffe is designed with an unusually large heart, weighing 25 pounds and
measuring nearly two-feet long. This large heart generates almost double the
blood pressure of a human heart at 150-beats per minute. Yet this animal does not experience backflow when it lowers its head, thanks to seven
one-way valves in the jugular veins, along with blood vessels in the animal’s lower legs that maintain balanced blood pressure.
So giraffes and llamas both have long
necks and compensating blood-pressure systems. But are they related? After all, they both chew their cud, and they are both
classified in the Order Artiodactlya.
However, the
llama’s taxonomy Family is called Camelidae—with the alpaca, guanaco, vicuna,
and camel (a distant relative) in their Family. The giraffe’s Family is called
Giraffidae, and its relatives are extinct, except for the okapi, which looks
more like a zebra than a giraffe.
The okapi is the giraffe's only relative. |
More importantly, the llama is
fully domesticated,
while the giraffe is a wild animal.
while the giraffe is a wild animal.
They are NOT relatives,
but it is understandable that many people think they are.
On your next trip to a local zoo or animal adventure park, count how many long-necked animals there are. Then ask Google or the zookeepers how these animals can reach for the highest leaves on the trees or lower their necks to drink water yet still receive just the right amount of blood flow to their brains. You'll be surprised by the many ways this is accomplished in nature.
Happy Trails from Mama Llama!