The Philadelphia Zoo is one of the US zoos I know of with the most geriatric animals. Zoos are essential to the health and well being of animals, and they make animals live longer lives. Plus Philly is a very old zoo. Philadelphia zoo elderly animals:
1.Leopard:Emma,18
2.Jaguar:Jutai,16
3.Lynx:Freya,17
4.Mangabey:Storm,25
5.Blue eyed black lemur:Stewart,30,Bardot,28
6.Anaconda:Angus,41,Amanda,29
7.Goat:Milan,14
8.Gazelle:Moira Abby,12
9.Degu:Beans,8
10.Mongoose lemur:Clara,29,Toby,23
11.Spider monkey:Arana,29,Chanza,22
12.Sloth:Argyle,46
13.Porcupine:Felix,16
14.Armadillo:Camilla,22
15.Meerkat: Pete,13
16.Squirrel monkey:Meg,24
17.Hog:Charlotte and Ruby, both 18
18.Hawk: Phoenix,32
19.Stork:Will,34
20.Titi monkey:Bellini,17