If you thought Rover or Sparky was smart, think again: Chaser just took him to school.

A border collie named Chaser has learned the names of 1,022 individual items -- more than any other animal, even the legendary Alex the parrot. But it's all in a day's work for these researchers.

Psychologists Alliston Reid and John Pilley of Wofford College in Spartanburg, S.C., wanted to test if there was a limit to the amount of words a border collie could learn, so they taught Chaser the names of hundreds of toys, one by one, slowly and patiently, for three years