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 tend to rely more on motion than focus, though. They have trouble seeing objects closer than about 10 inches and must use their noses to find the kibble that spills out of the bowl. The visual acuity of dogs is about 20/75, although the German shepherd, Rottweiler, and Schnauzer appear to be even more nearsighted.