Daisy, a dog adopted by Dana and his wife, had been having a hard time accepting training/supervision. After several weeks Daisy was still having occasional “accidents” inside the house. Dana and his wife by chance observed that bringing foster kittens in the house can stop Daisy from producing "accidents" in the house. According to Dana, the foster kittens remained with them for three weeks, and Daisy the dog did not break her training at all during that period. Why would this happen? Is it because of the foster kittens that Dana and his wife accidentally brought into the house?