My family and I can say it was one of the most difficult decisions we had to make in our lives because we did not want to let go of him. However, we could tell he was hurting. It is a horrible sight to see an animal suffer. They hurt and feel pain like humans. Using animals for medical research is unethical, due to the suffering and pain that ensues.
Animal research compliments the medical field.
Researchers often experiment on animals in order to develop medical advances that will inevitable be able to aid human beings. Testing is being performed on animals because animals have the closest genetic make-up to that of humans. New sciences have developed as a result of new research that has been performed on animals over the years. The animals are contaminated with a disease. Then, multiple tests are done on the animals until the researchers find a safe vaccine to cure them.