09-12-07 Assignment 1 : About clever animals

Almost all animals usually obey man's direction if they are adequatly educated. For example, many dogs learn to sit down when dogs' guardian feed dog food, and they will bark when thieves break into their house. Especially, seeing-eye dogs are most obedient among dogs. After they go through a training for a year, they can even lead blinds to cross a cross walk when the signal turn to green, and lead to get round when there are some obstacls.