I seem to have lost my draft for a review, so I'll write a very brief bit here before uploading some of my photos. I visited in July 2010, and there was a lot of construction work going on. As far as I can tell, it seems that a lot of work is ongoing and that the zoo's moving in the right direction. Bolivia's largest zoo, Santa Cruz has an amazing collection of native fauna, but the small cages are why the guidebooks don't recommend it very highly. So that's probably what I'll touch on first. I've attached a map to make this easier to visualise. As you enter the zoo, the nearest third consists mostly of small cages. There are offices, a veterinary clinic and a breeding centre for blue-throated macaws hidden amongst small aviaries (for birds from parakeets and amazons to kestrels and large hawks), large aviaries (for large birds of prey) and rows of cages. The rows of cages are used for everything from small macaws through to jaguars and condors. It seems that these horrible cages are partially used to temporarily hold animals whilst larger cages are being built, but it doesn't justify the large numbers of animals held inside. I think there were around 10 jaguars at the zoo, with only one held in a decent enclosure. There are further small cages spread throughout the middle section of the zoo, housing a variety of smaller animals, including barn owls, marmosets, kinkajou, coendous and grison. Fortunately the capuchins have been moved to more spacious enclosures (an improvement from Saro's photo). Within this first section there are some spacious enclosures, including a large one for howler monkeys, another for capuchins, and several decent-sized raptor aviaries. There are some very decent exhibits too; the reptile house has a brilliant collection, the new spectacled bear exhibit seems nice, and the 'aquaterrarium' is a brilliant habitat for large fish and reptiles. The main highlights for most visitors, however, are the two giant walkthrough aviaries. The newer one was still being stocked, but both showing off fantastic bird collections, with giant anteaters supposedly roaming through the older aviary too. The rest is a mix, I guess I'll let the photos show. The zoo had a number of escapees when I visited, but is also home to a large number of wild brown-throated sloths (which the zoo seems to help manage) and Bolivian squirrel monkeys too. My advice for any visitor is to walk around the zoo perimeter after your visit.