Abstract
A group of domestic rats and a group of wild pack rats were exposed to food and a 20% alcohol solution continuously for 20 weeks. Subsequently, both groups were exposed to food, alcohol solution, and water for nine weeks. No major changes in alcohol consumption rates occurred in either group within either of the two periods. Alcohol consumption decreased for both groups when the choice situation (alcohol vs water) was instituted. This decrease was more pronounced for domestic rats than for wild rats. The results are discussed in terms of potential physiological or other pre-experimental factors affecting alcohol consumption rate.
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