Pro to the question "Should Animals Be Used for Scientific or Commercial Testing?"
"In the US alone there are over 95 million prescriptions every year for asthma medications, primarily inhalers. So what can over 25 million American asthma sufferers thank for making their lives manageable? The guinea pigs and frogs which allowed scientists to gain the underlying understanding about how chemical nerve transmitters helped to control the muscles in the airways, as well as create reliever inhalers with a long duration of action.
This is just one example of a long list of medical achievements made possible by animal research which include insulin (dogs and rabbits), polio vaccine (monkeys), anaesthetics (rabbits), blood transfusion (monkeys, dogs), antibiotics to cure tuberculosis (guinea pigs), asthma treatment (frogs and guinea pigs), meningitis vaccine (mice), deep brain stimulation (monkeys), penicillin (mice)...
In a country where we eat 9 billion chickens and 150 million cattle, pigs and sheep every year, 25 million (approx.) animals (96% is estimated to be mice, rats, birds and fish) seems a small price to pay for medical progress."
"Animal Research Is an Ethical and Vital Tool to Fight Disease," blogs.law.harvard.edu, Jan. 14, 2013