over the period , 26 chimps have been born at the philadelphia institution , its parent organization , the livestock conservation institute , leads seven of the most successful primate breeding programs in the country . the society , which predominantly operates zoo centers in manhattan , nyc and pennsylvania , sells gorillas periodically with 51 participating north american zoos . its principal aims is to maximize the morphological diversity of an endangered variety , but a first , relative goal is to create happier gorillas by finding mates and establishing compatible groups . " these are very intelligent , aggressive animals , " said james doherty , manager of the bronx zoo . the zoo ' s current number of apes totals 19 . only the lincoln park zoo in ny has more , with 22 . interactive habitat .
The Bronx Zoo has 19 gorillas.