I know that most visitors to zoos get most excited about large mammals. However since joining ZooChat I've seen a number of Zoochatters say things like "it's got a pretty nice collection but it needs a keynote exhibit, fortunately they're getting [large mammal] soon. I've noticed that Anthony Sheridan excludes aquaria and bird parks, but not safari parks, from his definition of "zoo" (to my mind I can see excluding aquaria and can see excluding bird parks and safari parks, but safari parks by the nature of their layout are less zoo-like than bird parks or aquaria in my mind. I've also noticed that two exhibits in Texas--the Dallas World Aquarium and Moody Gardens--which have extensive exhibits of land animals but no large land mammals--avoid the term "zoo" in their name. I didn't know about the DWA and Moody Gardens because they don't use "zoo" in their name and don't offer reciprocity until I started posting here. And at least with DWA it seems to be tailor-made for me. On the other hand, I'm weird, and I did start posting here. In the case of these two establishments it's a good way to differentiate themselves from the Dallas and Houston Zoos, and I imagine visitors will be less upset that they didn't see giraffes at an "aquarium" or a "garden" than that that didn't see them at a "zoo." Would you guys say that the colloquial definition of "zoo"--the term as people use it--implies large mammals, and that most visitors will judge any establishment identified as a "zoo" on those terms? And if so, does it make sense for collections without large land mammals to call themselves by names other than "zoo"? And are there any specific animals that you think visitors would be very upset not to see at an "aquarium," a "bird parks" or "aviary," a "garden," or a "nature center" (to name some examples of non-zoo zoological facilities)? I feel like the absence of sharks and coral reef exhibits, parrots, butterflies, and birds of prey would draw complaint at aquaria, bird parks/aviaries, gardens, and nature centers, but those are still considerably lower base expectations than a proper zoo needing to have large hoofstock, big cats, and great apes.