... not the only side to the argument Singer (1993) also suggests that the use of animals is a discrimination against their species, and that we should value the suffering of nonhumans in the way we would view our own. This is fair enough to believe but what if the principle of using animals in research, can be justified by the importance of the findings? According to Coolican (1994, p.485) "comparisons across the phylogenetic scale are invaluable in helping us develop a framework for brain analysis based on evolutionary history". He also states that, "a seemingly useless or mystical piece of the nervous system may serve or have served, a function disclosed only through the discovery of its current function in another species". In the study by Moniz (1949, cited in Pinel 2000) a cure for mental illness through prefrontal lobotomy was discovered, his findings were based on a chimp that frequently ...

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