1st free reading : Smartest Dog

Based on the text i read above, there is a dog that has an amazing skill. It's Betsy. A dog in seven-year-old has been able to recognise 340 words. Even other dogs just able to recognise some commands, maybe about 15 but not with this dog.
I think the dog has a special skill. If it's trained goodly, it can be a friend for people. And it can helps humans, example to help their works.