Which living creature has the largest number of legs?

Millipede has the most number of legs.  Here are some interesting facts about Millipedes.

1. Some millipedes have over 700 legs.
2. Millipedes are plant eaters - they survive on decaying plant material. 
3. Millipedes are not poisonous but some species can cause allergic reaction for some people. 
4. They can live up to 6 years
5. They are born with only a few pairs of legs and keep adding more legs as they molt and grow

Sources
http://www.livescience.com/24765-750-leg-millipede-leggiest-animal.html
http://www.caes.uga.edu/publications/pubDetail.cfm?pk_id=6198