"Making a difference"

This is a picture I took inside one of the buildings at the Lincoln zoo. On the sign it says "You can make a difference" and then asks you to put money in the jar of the particular animal you would like to support. As you can see, there is just change in the jars that don't add up to much. These animals require so much money to feed, have the right equipment for each individual animal, to simply just have in the facility, and so much more that this small amount of change probably does not even make a dent in the amount they are spending. Therefore, I believe that this is just a simple way to make the zoo appear better and to help prove that they are trying to help the animals, and also give the visitors an outlet to feel like they are helping too so that they don't feel so guilty when they see the animals in these small cages.