Sometimes life really can be a rat race. US scientists have reported successfully training a group of the rodents to drive tiny cars in exchange for bits of Froot Loops cereal, and found that learning the task lowered their stress levels.
Sometimes life really can be a rat race. US scientists have reported successfully training a group of the rodents to drive tiny cars in exchange for bits of Froot Loops cereal, and found that learning the task lowered their stress levels.
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