Super Smart Dog Understands 1,022 Words

Dr. John Pilley’s genius border collie, Chaser, demonstrates her amazing ability to understand the names of her 1,022 different toys. Chaser the dog has the largest vocabulary of any non-human animal. Over a three year period she learned individual names for 1,022 different items including 116 balls, 800 cloth animals, 26 frisbees, and over 100 other assorted plastic items.

Video by BBCEarth