Scent and fear
Our hypothesis that the scent of a cat will slow a mouse down in a maze, is proven to be false.
Cats have traditionally been kept on farms to hunt and kill mice. Urbanization has brought these archrivals, the cat and the mouse, to cities, although today, most domesticated cats survive on cat food. Many mice are bred in laboratories and pet nurseries and may have never encountered the cat and may possibly have lost the innate instinct of fear towards cats.
It might be interesting to observe whether the sound of cat (instead of its scent) will produce different results.
Perhaps our results may also differ if wild mice were caught and used for this experiment.
Fear no smell - http://www.nature.com/news/2007/071107/full/news.2007.224.html
Mouse - http://en.wikipedia.org/wiki/Mouse
Handle the mice with care