Ok then I'll take your question in good faith and try to answer why zoos are necessary from a conservation perspective.
You stated :
Hi everybody,
Surely everyone has visited the zoo at least once. I personally do the same and I have always thought that animals should live in the natural environment rather than living in a zoo.
That value judgement that you have that animals should ideally live in their natural habitats rather than living in the artificial conditions of zoos is one that I share but it presupposes the condition that there is actually habitat or sufficient habitat left for a species to occupy.
In the case of many species habitat is either too fragmented or hemmed in by the growth of human populations and as such species therefore survive very precariously and move closer to extinction which will be inevitable sooner or later if there isn't the intervention of conservation (and zoos form part of this intervention).
There are dangers under these kinds of situations from inadequate nutrition because of alterations to the composition of the environment,inbreeding depression and genetic bottlenecks because of inability to disperse, greater susceptibility to disease or risk of predation or hybridization from invasive species and the problem of human-wildlife conflict or poaching arising from the proximity of humans.
The endangered pied tamarin monkey here in Brazil is a prime example of almost all of the problems described above that result from this lack of habitat due to deforestation and for this reason a large part of its conservation necessarily involves ex-situ conservation in zoos (which is complemented by in-situ conservation with the last wild populations).
In a few extreme cases like that of many of the pupfish species of Mexico and the USA like the Potosi pupfish for example there isn't even any natural habitat left at all because it has been totally destroyed by anthropogenic activity so the last populations are kept within zoos.
It is worth mentioning that with climate change worsening these situations will only become more common for all kinds of species and will very likely even include many charismatic mammal species so it will not be a problem just limited to obscure desert fish.
However, I see people saying that they should live in the zoo.
I don't know what people you are referring to that you say you have heard suggest that animals should be living in zoos as that is an odd sort of thing to say.
However, I imagine that these people that you mention are specifically referring to endangered species that are very threatened in the wild and that need captive insurance populations in zoos to avoid future extinction.
Can anyone tell me why it is better to let animals live in the wild than in the wild?
I think you meant to say "better to let animals live in zoos than in the wild", right?
Because if a threatened species in the situations that I've described above is to avoid extinction then for many of these animals zoos are the last option.
Of course in a perfect world the captivity of zoos is not a solution and should only be a temporary provisional measure for these species while conservationists work to improve the situation in the wild and reduce the threats or causes of decline.
However, the sad reality is that conservation is very complicated and it take a long time to try to tackle these challenges and despite our best efforts in many cases the problems facing species continue to get worse because most of human society have not addressed underlying causes of biodiversity loss.
Some people / animal rights activists would make the argument that it is "better" / "kinder" to let a species go extinct "with dignity" in the wild rather than for animals to be brought into captivity.
Personally I don't agree at all with that "argument" or the people making it because I do think we have a strong moral / ethical imperative to try to conserve species and for many reasons which are probably too complicated to explain in this already massive reply.
Your welcome
