David and I went last week with Andrea to BYU-Idaho where 3 of our children and 1 son-in-law studied this semester.
Erika had a psychology lab where she trained a chicken to peck at a dot, and then trained Sandi--this rat--to do tricks like leap across a table,...
climb up a rope and over a bridge of thin sticks.
Here's Sandi and her trainer with a coveted Olympic medal.
See Sandi in action! (for about 30 seconds)