Li Shenron
Legend
Just to let you know...
The reason why I noticed this is exactly that I am choosing a Familiar and I was considering the Snake (Tiny Viper). It has no use in combat (speed 15ft, reach 0ft, 1 point of damage) but it can deliver a poisonous bite. So I was kind of imagining it could exploit good Hide and Move Silently skills to poison an unsuspecting victim. Eventually I can only hide it somewhere on the ground, especially if we are admist the grass, where it would just stay still and wait for a foe to step in his square then bite him (maybe with an AoO if the foe doesn't stop in the square), it gives 1d6 Con damage as primary and secondary damage. But also the snake itself would be killed soon afterwards by the angry victim... 

