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.
This is a rough simulation I rendered through the eyes of a dog. A dog's eyesight is very limited to color in respect to what we see; they can see (a lighter shade of) blue and yellow, but cannot distinguish red and green. They also have a visual acuity (contrast) of much less detail than we do.