他用狗食饼干教宝儿数数。他拿出一把饼干，如果宝儿叫的次数和出示的饼干数一致，它就能得到这些饼干作为奖励。
He taught Beau to count using dog biscuits, laying out a handful and rewarding the dog when the number of his barks corresponded to the number of treats.
他用狗食饼干教宝儿数数。他拿出一把饼干，如果宝儿叫的次数和出示的饼干数一致，它就能得到这些饼干作为奖励。
He taught Beau to count using dog biscuits, laying out a handful and rewarding the dog when the number of his barks corresponded to the number of treats.
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