Giraffe’s Stiff Long Neck has just 7 Vertebrae!
12/14/2024
Giraffes love humans, yes, giraffes are friendly.
These creatures tend to have gentle personalities and aren't a species that
would actively attack a human being. Giraffes are the world's tallest mammals
and are not usually aggressive. The females can however be aggressive while
protecting their calf.
Giraffes have aroused man's curiosity since the earliest
times. The ancient Egyptians and Greeks believed that giraffes were a mixture
of the leopard and the camel, and they called the giraffe "a
camelopard."
The giraffe is the tallest of all living animals, but
scientists cannot explain how it got its long neck. A famous French zoologist,
Jean Baptiste de Lamarck, had a theory that at one time the giraffe's neck was
much shorter than it now is. He thought that the neck grew to its present
length because of the animal's habit of reaching for the tender leaves in the
upper branches of trees. But scientists in general don't accept de Lamarck's
theory.
Strangely enough, the body of a giraffe is no larger
than that of the average horse. Its tremendous height, which may reach 6 meters,
comes mostly from its legs and neck. The neck of a giraffe has only seven
vertebrae, which is what the human neck has. But each vertebra is extremely
long. Because of this, a giraffe always has a stiff neck. If it wants to take a
drink from the ground, it has to spread its legs far apart to be able to reach
down!
The strange shape and build of the giraffe is
perfectly suited to enable it to obtain its food. A giraffe eats only plants,
so its great height enables it to reach the leaves on trees which grow in the
African savanna where there is little grass.
A giraffe's tongue is often eighteen inches long, and
it can use it so skillfully that it can pick the smallest leaves off thorny
plants without being pricked. It also has a long upper lip which helps it pull
off many leaves at a time.
The giraffe can protect itself from danger in many
ways. First, the colouring of its hide makes it practically invisible when it
is feeding in the shadows of trees. It has well-developed ears which are
sensitive to the faintest sounds, and it has keen senses of smell and sight.
Finally, a giraffe can gallop at more than 30 miles an hour when pursued and
can outrun the fastest horse!
When attacked, a giraffe can put up a good fight by
kicking out with its hind legs or using its head like a sledge hammer. Even a
lion is careful in attacking a giraffe, always approaching it from behind!
Mother giraffes reject their babies, in this case,
natural selection might favour the mother that selectively abandons or culls
the weakest or youngest of her children to ensure that she can adequately
provide for the rest.
The giraffes give birth while standing. Newborn
giraffes enter the world in a sort of 'superman' position: front legs and
headfirst, followed by their body, and then back legs. Because of the extreme
size of their offspring, giraffe mums give birth standing up to not damage
their babies' lengthy necks.
The giraffe is unusual in never investigating urine on
the ground. What does it mean?
The statement means that giraffes exhibit unique
behaviour compared to many other animals when it comes to investigating urine.
Most animals use urine as a source of information—sniffing it to identify
territory, mating readiness, health, or identity of other animals. However,
giraffes do not investigate urine that has been deposited on the ground.
Instead, giraffes engage in different behaviours: they
test urine directly from the source by prompting other giraffes to urinate and
then sniffing or tasting it. This is particularly observed in male giraffes
during the process of assessing a female's reproductive status. The male uses a
behaviour called flehmen response, curling back its lips to analyze the
pheromones in the urine to determine if the female is in estrus and ready to
mate.
Thus, the statement highlights how giraffes differ
from many other species in their approach to using chemical cues for
communication and reproduction.
The male gathers the urine in his mouth with his
tongue and then frequently performs flehmen to assess her oestrous status.
Estrous is a recurring period of sexual receptivity and fertility.
Male giraffes will headbutt females in the bladder
until they pee. They then drink the urine, tasting it to determine whether the
female is ovulating.
Male giraffes practice “neck sparring,” violently
swinging their necks into each other to assert dominance, so the hypothesis
formed that males with longer necks may have been more reproductively
successful. But, more recently, biologists have proposed that neck length may
instead be driven by females' foraging behaviour.
To find which of them are willing to mate, the males
smell their urine. If things look promising, the male follows the female around
until she stands still, indicating that the time is right. Finally, the male
mounts the female from the rear and copulates with her.
Giraffe gestation, or length of pregnancy, isn't an
exact science. Giraffe pregnancies typically range between 14 and 16 months,
which can make planning for the birth a bit of a guessing game.
Many young giraffes, called calves, die from lion
attacks during their first year of life. Once a giraffe reaches adulthood its
height is often enough to protect it from lions. Adult giraffes, however, must
still be careful of lions when they are bending down to drink water or rest. Usually,
giraffes drink or rest in shifts so that at least one giraffe is always on the
lookout for approaching predators.
A strange question arises as to why the female giraffe
kicks off the newborn soon after birth.
The answer seems that the mother giraffe knows that
lions and leopards love giraffe meat. So, unless the baby giraffe quickly
learns to stand and run with the pack – it will have no chance of survival.
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