- "Quickly inflicting a lot of damage spawns a Wolf companion that fights alongside the player."
- — Description
Once bought, should the player manage to inflict a decent amount of damage within a small timeframe, a friendly Hellhound named Luna will spawn (signified by a whistling sound), following the player with the perk and attacking any nearby zombies. It will stay for about 45 seconds before despawning. Afterwards, the perk needs to recharge for about 5 minutes before Luna can be spawned again.
When Blood Wolf Bite is set as the "Modifier" perk and the player has all of their other perks, whenever Luna kills a zombie, there is a chance it may drop one of three types of power-ups:
- A power-up that gives the player 10 points, signified as a miniature Bonus Points.
- A power-up that adds a slight amount of charge to the player's special weapon, signified as a miniature Full Power.
- A power-up that gives the player an extra magazine for all their weapons, signified as a miniature Max Ammo.
The power-ups can only be picked up by the player with the perk, and it only affects them.