San Antonio Zoo is a non-profit organization with over 9,000 animals representing 750 species on 56 acres and is one of the first “cageless” zoos in the United States. The Zoo has one of the largest bird collections in the country and breeding program for endangered and threatened species. Open 365 days a year, Admission: $14.25 Adults, $11.25 Seniors (62 yrs+), $11.25 Children (3-11), Free for Children 2 and under, $7 Handicapped (3-14), $9 Handicapped (15 yrs+), Free for Zoo Members, Zoo memberships start at $90 for the entire family and good 365 days a year