wow! wasn't expecting this kind of reptile!! nice combination n creativity. grt job, man!
abt ur question, u can check out the Full Body IK example of a quadruped in Maya. i have come across many sites but i am not being able to remember any of them :headbang: :angery: however i do remember this site "http://www.rigging101.com/" which is dedicated to rigging only. or u can look at the process of rigging in other 3d softwares and do the same in Maya too (which is not recommended, BTW )