The zoo is building a short while dedicated to zoo donors along Walking bridge zoo visitors can make a cash donation and have a plaque with their name on it added To the wall the zoo paid 14,750 to build the wall and so far has collected 9569 in donations which number expresses the amount that you is short of free SeavillelTo the wall the zoo paid 14,750 to build the wall and so far has collected 9569 in donations which number expresses the amount the zoo is short of recovering The cost of building the wall