Both animals become so interested in the act （as well as the praise and food they received after the act） that they forgot they were natural enemies.

Both animals become so interested in the act （as well as the praise and food they received after the act） that they forgot they were natural enemies.

两个动物都对这一行为非常感兴趣(以及在这一行为之后得到的赞扬和食物)，以至于它们忘记了自己是天敌。