The largest by area, is the Red McCombs Wildlife (Texas) with over 12.500 acres. The largest by species is San Diego Zoo (California) with around 4,500 animals in 900 species.
That is pretty much based on personal preference.
Here are some opinions from other contributors.
* Audubon Zoo in New Orleans. * The Bronx Zoo in New York City * San Diego Zoo
hyderabad
type it on the internet on google images the biggest tiger it will come on, and the second biggest tiger is in Australia Perth Zoo.
The Toronto Zoo is the 3rd largest in the world
not as big as paignton zoo its the 4th biggest zoo in the world
No - Australia Zoo is not a National Park.
not as big as paignton zoo its the 4th biggest zoo in the world
The Phoenix Zoo located in Down Town Phoenix. It is the biggest Zoo in the World that is Privately owned. It is also a "shelter zoo"
The largest zoo in terms of land area is the Monarto Zoological Park in Australia with 3,583 acres.
Lahore Zoo
City Zoo
Elephants are the largest land mammal, but the biggest mammal in the world is not on land, but in the ocean--whales are definitely the largest mammals in the world.
the Sierra Safari Zoo