Your dog has learned how to perform dangerous combat maneuvers.
Battle Dice
Your hound has two battle dice, which are d10s. A battle die is expended when your hound uses it. It regains all of its expended battle dice when it finishes a short or long rest, or when it rolls initiative.
Maneuvers
Your dog knows two of your maneuvers that don't have a prerequisite. The hound's Bite counts as using a Melee weapon for the purpose of maneuvers.
Saving Throws
If a maneuver requires a saving throw, it uses your Maneuver save DC.