... understood, in terms of their needs. It is also advised that the best animal should be chosen that would suffer the least. This may include the animal that can withstand the longest period of food deprivation. Gray 1987 however, claims that food deprivation is not a form of suffering, and the rats that are used in research are fed once a day. Acoording to Gray, it would be ethical but it may also depend on the quantity of food given to the rats. Some experiments that are supposed to benefit animals are analysed to not be at all. An example is Conover's scarecrow that was replaced by a model crow in an owl's talons. It seems that the crows were saved from being shot or another form of death, however, the crows could die from starvation instead or flock to the next field where they are in turn shot as ...

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