While he was a zombie, Voss loved to play fetch. If you throw the stick, he forgets all about turning you into lunch in favor of chasing that stick down. Naturally when he came across WellHidden's undead naga god, he wanted his stick thrown. I think Fender would rather throw him.

Voss Jaeger (c) Me
Fender (c) WellHidden
Hunter Zombies/L4D (c) Valve