If the berries are not edible Foxface poison into. He was then able to escape death, they will not be Katniss and Peeta until that Cato and Cato will come together when the rest of the dead to kill Katniss and Peeta Foxface with it.
If Foxface not eat the berries are poisonous. He would not die You can escape to another. Until that Katniss Peeta and Cato will kill each other and die when Cato. Peeta and Katniss was left with Foxface.
If Foxface don't eat berries are toxic, he shall not die. And able to escape again, until ที่Katniss Peeta Cato will come and kill each other. And when Cato died, left Katniss with Peeta and Foxface.