Along Came a Spider Part VIII

There are 40 thousand species of spiders.  Each is estimated to have as many as 1000 different poisons it uses to catch prey.  Research before has focused on the venoms of larger species, such as tarantulas.  New research, however, has shown that there are many interesting chemicals in the poisons of many smaller species.  One of those venoms blocks acidic ion channels, which means that it can decrease pain without much ill effect by itself.  Further research is ongoing.

http://www.lifescientist.com.au/article/
328567/feature_plumbing_peptides_spider_toxins?pp=1

-Brown Rhino