There is a discussion whether the killing of animals can be justified
or not. Many people think that all animals should be protected,
particularly native animals. However, some people feel that the killing of
animals should be allowed when they are over population, when animals
present a danger to humans, and when it is economically beneficial.
The culling of animals can be justified when the population of
certain animals is too large. Dr Graeme Colon, a kangaroo ecologist in
a lecture in the University of Melbourne said that it is a general rule, 100
kangaroos per square kilometers was a sign of trouble, because over
population lead to a widespread land degradation and widespread plant
loss, country will get overgrazed, because of the lack of food caused by
the drought in the area, but now it is 200 kangaroos per square
kilometers. They also compete with other grazing animals, the problem
like this situation will affect the balance of natural environment. So
animals should be culled when they are over population is to large and
have a treat to the natural environment and compete with other animals.
It is reasonable to kill animals when they present a danger to
humans. When some animals attack humans, they should be killed, such
as the grey nurse shark attacked at the spearfisherman and was going to
eat him, so he shot this shark and just in self-defense. ( Williams 2004 ).
People are in self-defense when some animals arrack them. In addition,
sometimes some animals spread disease to people as they should be
culled. For example, the serious eruption: in Hong Kong and in Vietnam.
Health officials thought the culling of birds to reduce the danger to
humans. ( Von Cluck 2005 ). Some people recognize that some animals
need to be culled, because they spread disease quickly to humans. So the
killing of animals can be justified when they present a danger to humans....