Maybe this would be a good read for one of your home schooling courses.
Of course then karate boy would have to give us a report. ;-)
# Seaman: The Dog Who Explored the West With Lewis and Clark (A Peachtree Junior Publication) by Gail Karwoski
# Lewis and Clark and Me: A Dog's Tale by Laurie Myers
# Seaman's Journal: On the Trail With Lewis and Clark (Lewis & Clark Expedition) by Patti Reeder Eubank
# Dog of Discovery: A Newfoundland's Adventures With Lewis and Clark by Laurence P. Pringle
apparently several had that idea... oh well. it's still a good idea.