Dringenberg et al.'s experiment at Queen's University using pregnant guinea pigs to establish a causal relationship between fetal alcohol exposure and later neurological and behavioural deficits was limited in that:

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This experiment used pregnant guinea pigs as subjects, and it is possible that results obtained from experiments on guinea pigs may not generalize to humans. Although animal studies can be helpful in understanding certain aspects of human biology, there are often differences between species that make it difficult to extrapolate findings from animal studies to humans.

Dringenberg Et Al