As we saw after meeting Chaser, the world's smartest dog
, border collies can be frighteningly
bright. Stanley Coren ranks them in his book The Intelligence of Dogs
as the smartest breed, able to complete a series of cognition tests (learning names of objects, learning new tricks) more reliably than any other breed of dog.
Check out our feature on Chaser
for more, but as a brief: Chaser has been able to learn over a thousand words, including names of objects and verbs, but also modifiers, like adjectives and adverbs, and prepositions. And she can make inferences and draw conclusions.