This dog has learned more than 1000 words in 3 years.
More about Chaser (both of these articles are a bit old, but still interesting):
- “I Met The World’s Smartest Dog” (from Popular Science)
- “Meet the Dog Who Knows 1,000 Words” (from TIME)
- “There’s More To Smart Dogs Than What ’60 Minutes’ And Chaser Showed You” (from Forbes)
Chaser has her own Facebook page, if you want to see how she’s doing now.
And here’s a website with all the background, research, a photo gallery, and more.
For another topic about “You can’t teach an old dog new tricks” see “Dogs, tricks, and trees that bend” from last year.