Mongoose vs Cobra Snake
Mongooses are known to kill even 3 m (10 ft) long king cobras (the longest venomous snake). Still, the mongooses are not totally immune to snake venom but much more resistant to it: for the same weight, they resist 20 times more than a mouse. In happy cases, the mongoose requires several hours until the effect of the venom is gone. Then, it returns, and starts eating the snake, head first.
Watch Video Here