I read the medical write ups on dogs and cats, but they also mentioned the venom was negligible to humans, that many people shrugged off the venom like it was nothing..your posts say differently though...I guess it's true about people reacting differently to spider venom..very interesting.Yeah they pack one hell of a bite, 9 hours of muscle cramps and vomiting, also have a 100% kill ratio on dogs and cats of all sizes.