In the examples below, notice that transportation and park ticket prices stay the same even when the number of days changes. If you're staying somewhere that's relatively inexpensive and not eating out all the time, you can often extend a trip from 4 to 7 days for very little money.
Some seeing eye dogs are selected from breeders specifically because they possess a certain temperament that is required of service dogs. However, many seeing eye dogs are rescued from animal shelters. All dogs who enter the training program to become seeing eye dogs must past a series of rigorous personality tests. If the dog passes the tests, they are then taken to a training facility.
Dogs do in fact see in color, as shown by the fact that a dog's eye contains both rods (which we associate with B/W vision) and cones (which differentiate between colors). While humans' cones are attached to neurons that react to light at 435nm, 545nm and 570nm, a dog's cones react at 429nm and 555nm.