Thanatos roars in pain, a small surge of adrenaline making him thrash his head around, mouth open, as Zaana's jaws clamp forcefully on his head.  Injured, frightened, and furious, the Komodo clamps down on the next thing his jaws come into contact with, which ended up being around the general area where her poison glands were.  With his teeth hooked into the roof of Zaana's mouth, he holds his jaws shut as hard and as long as he can.  The cesspool of deadly bacteria that make up the Komodo'a "venom" begin to invade into the soft tissue of her mouth, worming their way through her mouth.  Almost 6 seconds later, Thanatos is forced to let go, the adrenaline wearing off as his limbs lose all feeling.   He still somehow manages to snarl in defiance and rage.