There’s a hidden population lurking around Disneyland unchecked, a group that owns the park at night and keeps the Magic Kingdom rodent free.
They’re the feral cats who call Disneyland home, and these welcome squatters have become the source of discussion between animal advocacy groups and Disney.
Disneyland has allowed feral cats to call the park home since the very beginning, but by 2001 the park’s feral cat population was growing out of control, so they allowed animal rescue group Best Friends Catnippers to perform TNRs (trap-neuter-return) on the furry populace.
Today there are at least 100 feral cats roaming around the park after dark, but Disney doesn’t want to discuss these guest gatos, and some naturalist groups are worried these hungry kitties are going to wreak havoc on the local wildlife.
If conditions remain unchanged, such populations will usually level themselves out in regards to one another over the course of several years. I suspect, however, that changes will occur: more cats may move in, the park may increase in visitors (and thus food and waste, and thus prey populations), greater action may be taken to remove cats, direct action may be taken to lower the population of prey such as mice and rats and bugs, etc.
In summary, there is a problem here, but how big of one and what should be done is not certain. Figuring it out is not a simple matter of "remove the cats" or "save the sparrows" but trying to figure out how each change will affect each component, how each change of each component will affect the other components, etc.