A Truffle Hound who has eaten a truffle becomes extremely paranoid and aggressive, and can become a dangerous foe to any opponent unfortunate enough to meet a newly truffle-fed Truffle Hound.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Truffle MadnessURL Copied!
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.
If the unit they are with did not themselves declare a charge this turn, the Truffle Hounds may be released in the Charge sub-phase of the Movement Phase, and do not need to test for Berserk Rage. 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.