Added on: 23rd Dec 2014
While they are not dangerous in the typical sense of the word as
they play a critical role in the environment and even in some
culture’s diets, they have the potential to cause major damage to
crops and infrastructure.
Lice are wingless scavengers that feed on the skin of the host’s
body, or on other secretions such as blood. On the average,
humans who serve as hosts to lice have about fifteen different
species of lice on their heads. Although like termites they are not
always dangerous to humans in the classic sense they do have
the ability to transmit diseases.
Every year the Deer Tick infects thousands of people with
Lyme Disease. Lyme Disease begins with a rash around the bite
resembling a bull’s eye. Early symptoms include head ache and fever.
As time passes, the victim will suffer stiff joints and heart problems.
Few victims die from the disease but their suffering can go on for years.
The first creature on our list that would be dangerous in the
typical sense of the word, army ants are known for their aggression,
especially as predators. Unlike other species of ants, army ants do
not construct their own permanent nests. Instead, they build
colonies that move from one place to another. These predators
incessantly move during the day, preying upon insects and other small
vertebrates. In fact the entire colony put together can consume over
half a million prey animals each day.
Although most yellow jackets are little more than a pest,
certain species such as the German yellow jacket of North America
are bold and aggressive, and if provoked, they can sting repeatedly and
painfully. They will even mark their aggressors and pursue
them if provoked.
Although the sting of a female black widow spider can be very
harmful to humans due to the neurotoxins released, if medical
attention is sought immediately then the effects of the bite can be
limited to little more than some pain.
Although they look cute and furry, and even supposedly derived their
name from their resemblance to “pussy cats”, do not be deceived.
Their fur hides spines that can cause an extremely painful reaction upon
contact with human skin and sometimes causes chest pain,
numbness, or difficulty breathing.
One of the best known disease carrying bugs, cockroaches have
been known to carry numerous disease agents that can be very
dangerous to humans. And here’s a fun fact for you, they can live
for months without food and water.
Parasitic worms are a type of eukaryotic parasite that get their
nourishment from absorbing the nutrients of their hosts by sucking their
blood. Most parasitic worms are known to dwell inside the digestive
tract of humans and cause insomnia, vomiting, nausea, and
numerous other issues.