A unit with one or more Truffle Hounds must place them in the front rank of the unit along with any command group models and/or characters. They may be attacked separately from any other models in the unit.
The Truffle Hounds may be released in the Charge subphase of the Movement Phase, and do not need to test for Berserk Charge. The Truffle Hounds must then declare a charge as if they had failed their Berserk Rage test. After they have been released, they will automatically form their own unit of Skirmishers. From that point, they will keep having to declare charges as if they had failed their Berserk Rage whenever possible for the rest of the game.
Your opponent will only receive Victory Points for Truffle Hounds if the unit they were bought with is destroyed.