Is Your Dog a Mathematician?

It all started with Elvis.

In 2003, mathematician Tim Pennings of Hope College in Holland, Mich., revealed to the world that his Welsh corgi, Elvis, appears to be solving a calculus problem when finding the optimal path to fetch a ball. In this case, optimal path means minimizing travel time.

http://www.sciencenews.org/articles/20060218/mathtrek.asp