Here is a list of species that I saw during my visit today. It differs a bit from the one Arizona Docent posted on the news thread, so I thought I would show it for comparison.
Mammals
Black-and-white ruffed lemur, Varecia variegata
Ring-tailed lemur, Lemur catta
Pygmy marmoset, Cebuella pygmaea
Cottontop tamarin, Saguinus oedipus
Red-handed tamarin, Saguinus midas
Bearded emperor tamarin, Saguinus imperator subgrisescens
Golden lion tamarin, Leontopithecus rosalia
Golden-headed lion tamarin, Leontopithecus chrysomelas
Crested capuchin, Sapajus robustus
Dusky/coppery titi, Callicebus moloch
White-faced saki, Pithecia pithecia
Colombian black spider monkey, Ateles fusciceps robustus
Southern black howler, Alouatta caraya
Guereza colobus, Colobus guereza
Silvery lutung, Trachypithecus cristatus
Lar gibbon, Hylobates lar
Giant anteater, Myrmecophaga tridactyla
Linne's two-toed sloth, Choloepus tridactylus
Ocelot, Leopardus pardalis
Margay, Leopardus wiedii
Binturong, Arctictis binturong
Indian crested porcupine, Hystrix indica
Prehensile-tailed porcupine, Coendou prehensilis
Guanaco, Lama guanicoe
Dromedary camel, Bactrian camel, and other domestics
Birds
Bald eagle, Haliaeetus leucocephalus? (exhibit empty, being renovated)
Black-necked swan, Cygnus melancoryphus
White-faced whistling duck, Dendrocygna viduata
Crested screamer, Chauna torquata
Scarlet ibis, Eudocimus ruber
Sunbittern, Eurypyga helias
Trumpeter hornbill, Bycanistes bucinator
Blue and yellow macaw, Ara ararauna
Red-crowned amazon, Amazona viridigenalis
White-bellied caique, Pionites leucogaster
Sun conure, Aratinga solstitialis
Troupial, Icterus icterus
Blue-throated piping guan, Pipile cumanensis
Gray-necked wood rail, Aramides cajaneus
Reptiles
Green iguana, Iguana iguana
Western pond turtle, Actinemys/Emys marmorata
Boa constrictor, Boa constrictor
Amphibians
Golden poison frog, Phyllobates terribilis
Invertebrates
Goliath birdeater tarantula, Theraphosa blondi
Mammals
Black-and-white ruffed lemur, Varecia variegata
Ring-tailed lemur, Lemur catta
Pygmy marmoset, Cebuella pygmaea
Cottontop tamarin, Saguinus oedipus
Red-handed tamarin, Saguinus midas
Bearded emperor tamarin, Saguinus imperator subgrisescens
Golden lion tamarin, Leontopithecus rosalia
Golden-headed lion tamarin, Leontopithecus chrysomelas
Crested capuchin, Sapajus robustus
Dusky/coppery titi, Callicebus moloch
White-faced saki, Pithecia pithecia
Colombian black spider monkey, Ateles fusciceps robustus
Southern black howler, Alouatta caraya
Guereza colobus, Colobus guereza
Silvery lutung, Trachypithecus cristatus
Lar gibbon, Hylobates lar
Giant anteater, Myrmecophaga tridactyla
Linne's two-toed sloth, Choloepus tridactylus
Ocelot, Leopardus pardalis
Margay, Leopardus wiedii
Binturong, Arctictis binturong
Indian crested porcupine, Hystrix indica
Prehensile-tailed porcupine, Coendou prehensilis
Guanaco, Lama guanicoe
Dromedary camel, Bactrian camel, and other domestics
Birds
Bald eagle, Haliaeetus leucocephalus? (exhibit empty, being renovated)
Black-necked swan, Cygnus melancoryphus
White-faced whistling duck, Dendrocygna viduata
Crested screamer, Chauna torquata
Scarlet ibis, Eudocimus ruber
Sunbittern, Eurypyga helias
Trumpeter hornbill, Bycanistes bucinator
Blue and yellow macaw, Ara ararauna
Red-crowned amazon, Amazona viridigenalis
White-bellied caique, Pionites leucogaster
Sun conure, Aratinga solstitialis
Troupial, Icterus icterus
Blue-throated piping guan, Pipile cumanensis
Gray-necked wood rail, Aramides cajaneus
Reptiles
Green iguana, Iguana iguana
Western pond turtle, Actinemys/Emys marmorata
Boa constrictor, Boa constrictor
Amphibians
Golden poison frog, Phyllobates terribilis
Invertebrates
Goliath birdeater tarantula, Theraphosa blondi