Animal testing is common practice in drug development and other areas of scientific research. But it is largely used in areas of pharmacological, bio-medical and biological research.
Even animals were also used to test the potency of atomic bombs. Further they are also sent to space, moon, etc. to see if human life can be possible there.
So animals are allowed to sacrifice themselves instead of humans. This is done to avoid any potential harm to humans as humans are considered more valuable than animals.
But animal welfare activists consider this to be inhuman and cruelty to animals. Hence governments have framed rules to prevent to cruelty to animals.
Still the scientific research seems to be unable to progress without the use of animals. And now a days, this animal use has spread to commercial research.
Animal Testing Pros and Cons list
We will be seeing the pros and cons of animal testing in two different lists.
1.Saving valuable human lives: When a new chemical or substance is found to have some effect on body physiology, it is first evaluated on animals. The characters like safety, maximum dose tolerance, time span of effect etc. are noted by giving to suitable animal. If this is done directly on humans without before testing on animals, it could be disastrous.
2. Minimize the cost: Animal testing decreases the cost significantly. Testing on humans is highly expensive. During clinical trials, human subjects are procured to make the final test before releasing drug into market. These human subjects have to be paid many time more than animals for study. Also the treatment and maintenance of human subjects is expensive during testing. So testing on animals will be cheaper. For example frogs are free to catch, albino rats are available fore just a dollar, while a rabbit for $10. Also small animals like rodents are preferred than big animals to minimize the waste due to dead animals.
But on the other hand a human subject must be paid thousand to millions as compensation. So this shows animal study is cheaper than using direct human subjects. Also the food, drug and other requirements are low to animals than an average human.
3. Extensive research: Animal study provides for extensive research. After testing the drug for its effects in terms of behavior and body changes, further study is done on the tissues. The animals are killed and the tissues related to drug action are isolated and taken for molecular level study. This type of study actually gives an idea of how the drug shows it effect at molecular levels.
4. Reliable studies: Animals are similar to humans in terms of physiology and behavior to pain. So testing a drug on animals not only gives preliminary confirmation of activity but enhances the reliability. Hence those drugs which are found to be effective in humans are again tested on animals for confirmation of activity.
5. For study & research: Animals are also used for demonstrative studies to the students. Though this is being restricted in most countries, still it is inevitable. Even animal dissections and surgery can be used as practice and introduction to surgery in humans.
6. Animal medication studies: Few drugs are also developed for use extensively on pet and farm animals. In such drug development process, use of animals is essential as it helps to know how the drug affects the milk, eggs and other animal products which will be used by humans.
7. Medical animals: Animals are bred and grown for sake of research purposes. A medical animal is grown in lab and its physiology and activity are controlled to make them less troublesome. Even there are companies involved in growing these for sake of experiments.
Animal Testing Cons:
1.Pain & Suffering: Animals have to undergo sever suffering during testing. Unlike testing in humans, the animals testing is so through and harsh. Repeated trials are taken and also subjected to high doses to see the lethal effect. So the chances are the animals suffer a lot and also at the end most of them are killed. It seems like these animals are only grown for kill. Because at the end most of them are dead. Those which are alive are also sacrificed to avoid unnecessary cost of feeding and maintenance.
2. Difficult maintenance: Animals cannot communicate like human subjects. So any inconvenience or pain during breeding, growth and maintenance can’t be know to the care taker. Even many animals die due to climate variation and health problems. The animals need special protection during those time. For this an experienced care taker is needed.
3. Difficult experimentation: Animal experiments are not so easy. The animals like rats, mice may even bite the handler. Also when experiments are run for long time like week or months, animals may die in between. So the experiments can be hindered easily.
4. Animals results cannot be reliable to the fullest: Though animal physiology is similar to humans, not all the studies can be extrapolated to humans. For example, animals cannot think, show other psychological symptoms as humans. So any testing for psychotic drugs on animals will not be sufficient to equate with human subjects. Also animals have high metabolic activity than humans, so they can tolerate high doses but not humans.
5. Life of animals: Animals live in their own set of environment conditions. Like rats are active at night than in day. They prefer to live in burrows than in open cages. They are highly active and motile physically and they may find it stressful to live in confined cages in labs without moving much. All these changes in animals life would also bring changes in physiology. Hence testing medications on animals may not give a direct correlation of activity in humans who are free to live as they wish.
This is the list of Animal Testing Pros and Cons. Though there are many allegations against use of animals, still their use is inevitable in research.