Monkey business at the Santa Ana Zoo

Barry Rae shows his 11-month-old son Wyatt the monkey enclosure at the zoo.  (Christine Cotter / Los Angeles Times)

A red-handed tamarin scratches itself at the zoo.  (Christine Cotter / Los Angeles Times)

Two red-handed tamarins at the Santa Ana Zoo.  (Christine Cotter / Los Angeles Times)

Exactly 50 monkeys now reside at the zoo, among them this silver langur.  (Christine Cotter / Los Angeles Times)

The Santa Ana Zoo opened in 1953 in Prentice Park, not far from the Civic Center.  (Christine Cotter / Los Angeles Times)