Donate a can or box of non-expired/non-perishable food to the OKC Zoo from Saturday, Nov. 5 through Sunday, Nov. 20, and receive half off general Zoo admission. One discount per person per food item donated. Suggested food donations include peanut butter, canned tuna, chicken, vegetables and/or fruits, cereal and oatmeal. Food donations can be dropped off at the Zoo’s ticket windows.