Farm animals aren't the only ones that suffer at the hands of human beings. Scientists use animals for their research. It's not just rats and guinea pigs - cats, dogs, monkeys and even chimpanzees can be found in laboratories, many of them suffering pain and distress as they are drugged or given electric shocks. Singer's test to see if any research is morally acceptable is this: would we be prepared to perform the same experiment on a brain-damaged human being? If not, he believes, it is not right to perform the experiment on an animal with a similar level of mental awareness. This is a tough test, and not many experiments would pass it. In practice, then, Singer is very strongly against using animals in research. The