What happens to the animals when an experiment ends?
The majority of the animals used in experiments are euthanized (killed) during or after the experiment. There are no accurate statistics available on exactly how many animals are euthanized in laboratories every year. In some cases, animals are not euthanized, but die as a result of the experiment for which they were used. For example, the LD50 (lethal dose 50) test involves determining the dose of a substance that kills 50 percent of the animals tested. Some animals in laboratories, depending on the research protocol, can be used in additional experiments. It is extremely rare that animals are either adopted out or placed into a sanctuary after research is conducted on them. In 2000, however, a national sanctuary system was established for chimpanzees who were used in Q: What is the position of The HSUS regarding animals used in biomedical research? A: As do most scientists, The HSUS advocates an end to the use of animals in biomedical research that is harmful to the animals. Accordin
