Motivating question: 哪種狗最聰明？哪種狗最不聰明？
- Intelligence of Dogs (A short summary of the research of Stanley Cohen)
- An evidence-based decision assistance model for predicting training outcome in juvenile guide dogs. Harvey, et al (2017). PLOS one.
- 狗到底有多聰明？主人和科學家想的不一樣 ＠紐約時報中文網