Can you name 60 of Chaser (the dog)'s stuffed animal toys? Chaser is the Border Collie with the largest tested memory of any non-human animal trained by John Piley. Using these videos as reference: https://youtu.be/QPgZ8KHLXag;https://youtu.be/_8v7sLUM2EU;https://youtu.be/tGlUZWNjxPA;