Arsenic, a poison for humans but it is not harmful to sheep.Sheep, goats, horses and mice can also eat hemlock in large numbers while this is toxic to humans.
Animal research, or animal testing, is the use of animals in scientific researches to develop drugs for the life-taking diseases that human beings contract. Animal testing helps producing many vaccines and other drugs, like penicillin, and thus, save many human lives.
On the other hand, animal testing also causes pain and kills a lot of animals used during the researches that many people oppose this practice.
It is definitely true that 15 laboratory workers in the US have been killed by the Marburg virus and other monkey viruses, and that there have been two outbreaks of Ebola in the US labs where they test them.
Critics continue to argue that animal kept in unnatural conditions, or animals in pain or stress, are not giving rise to accurate or consistent results anyway.
The arguments he puts forth includes misleading results of animal tests while they are applied to humans.
Parsley is considered to be a deadly poison for parrots yet we use it to flavor our food.
Even if it were possible, it would also take much longer to see potential effects, because of the length of time we live compared to laboratory animals such as rats or rabbits.
It is true that the results are not always applicable to humans.
Computer models are not advanced enough, and testing on plants is much less applicable to humans than tests on animals such as monkeys.
Before I started this essay I was already against animal testing.