You'll find the answer here adjacent to the picture of the Erie Canal.
http://74.125.113.132/search?q=cache:sIsj-1_4hRYJ:www.buffaloah.com/h/erieC/percy/percy.html+animal+used+to+pull+canal+boats&cd=2&hl=en&ct=clnk&gl=us&ie=UTF-8
In the 1800's, what was being used o pull the canal boats?
2 answers
wagons