*puts on helmet for protection*
Bad exhibits at great zoos
Toledo Zoo - 1. some of the tanks at the aquarium are on the small or overcrowded side, 2. Tembo Trail is a big mish-mosh of mammals from all over: African elephants and Indian rhino, yaks and brown bear (in an ugly exhibit), and Tasmanian devils? What were they thinking? At least San Diego's Elephant Odyssey is mish-moshed for a clear reason (representing Ice Age-era California using living species as proxies) 3. the tigers and snow leopards
Cincinnati Zoo - I might forgive the reptile house if they didn't have that awful Chinese alligator/snapping turtle pond. In the Africa section, I didn't like the "group" composition of the herd animals (kudu, wildebeest, warthog) because they were alone or just in pairs. The exhibit itself was lovely, but the group compositions I believe were not appropriate. To be fair, I only went once in 2018, so it could very well be different now.
Fort Worth Zoo - coyote, bear, penguins/eiders (the eiders flew real fast to the other side of the exhibit every time someone went by. It also feels more cobbled together than like an actual pleasant zoo exhibit experience). Also didn't love the tigers, but mostly because of the iron bar fencing that looks like a vestige of the bad old days of zoos (to be fair, they are working on their master plan, so some of these exhibits may look different in a few years)
Columbus Zoo - Humboldt penguins. The okapis could have used more privacy; also didn't love the gorilla habitat but I think they plan on renovating it
Brookfield Zoo - Tropics World (ugly, sterile. Decent immersion level, though)
Shedd Aquarium - California sea lion; they had a cane toad once in a waaaaaay too small terrarium, but I don't think they still have it.
Bronx Zoo - Reptile House mostly because it is dark in some spots. Aquatic Bird House (looks like bathroom).
Detroit Zoo - some of the exhibits in the reptile house were a bit on the small side.
Philadelphia Zoo - small mammal house (same as Bronx Zoo aquatic bird house)
St. Louis Zoo - echidna/tree kangaroo and some of the farm animals in Children's Zoo looked like they could use more space. Same goes for some of the big cat exhibits.
The Wilds - parakeet aviary. The carnivores (African hunting dogs, cheetahs, and dholes) could have used more space or at least more privacy)
Dallas Zoo - one okapi had a smallish enclosure with no greenery and little in the way of shelter, the other was near the hippo exhibit (space looked ok) and the day I was there, they were cleaning the hippo pond with loud hoses. I felt bad for the okapi who I believe was hidden or not on show.
Good exhibits at bad zoos (not that I think these are totally bad zoos, just showing age or in need of a facelift)
Buffalo Zoo (not so much bad, just showing its age) - Rainforest Falls (immersive Venzualen Amazon exhibit with free-flying birds, giant anteaters, ocelots, vampire bats, and caimans.
Franklin Park Zoo - nice lion and tiger exhibits, not Detroit-tier, but looked to be enough space and with enough privacy. Also nice African hoofstock (including giraffes) exhibits. I have a friend from the Boston-area who called this zoo "sad", and I think he sold the place short.