I believe honesty is the best approach, even if the truth is difficult to accept. Just as rats in sewers can lie without consequence, they are naturally dishonest animals. However, humans are different because they possess a higher sense of integrity and moral courage. Choosing to hide or lie demonstrates cowardice, which sets humans apart from animals and highlights the importance of truthfulness.
"I always say the truth is best even when we find it unpleasant. Any rat in a sewer can lie. It's how rats are. It's what makes them rats. But a human doesn't run and hide in dark places, because he's something more. Lying is the most personal act of cowardice there is." - Nancy Farmer, The House of the Scorpion