re; edinburgh - thanks for that info, i was looking at a site which mentioned its polar bears, it seemed up to date. i also saw some other articles which criticized its polar bear enclosue (i was aware they were going to move her i did not know that thay had done it)
i know that not all places keep them on concrete, i did say that.
i know that they dont live on snow all year round but also experience ice and spend a lot of time swimming out at sea.
a 2005 study concluded that polar bears are unsuitable for captivity becase they are desgined to live in artic conditions and easily over heat even in sub zero temparatures. any temperature above freezing is considered warm.
Polar bears do not have any physical or morphological means of staying cool; they rely on behavior to do that. In the wild polar bears will dig deep day beds in the soil until they reach the permafrost and rest in these to cool down. These day beds are often shaded by long grasses and hummocky terrain. They may also take mud and dust baths to cool down.
In a 2003 report, researchers from Oxford University concluded that polar bears are one of the species most affected by captivity. The bears are prone to problems that include poor health and repetitive stereotypic behaviours. These problems were suggested to stem from constraints imposed on the natural behaviour of susceptible animals with wide-ranging lifestyles in the wild. The report revealed that naturally wide-ranging species show the most evidence of stress and/or psychological dysfunction in captivity.A zoo in Canada had to put one on Prozac.
The authors of the report stated: “our findings indicate that the keeping of naturally wide-ranging carnivores should either be fundamentally improved or phased out”
Many progressive zoos have phased out the keeping of polar bears in captivity, recognizing that it is very difficult, if not impossible, to provide for their needs in a captive setting.
i like zoos but i believe some animals are just not suited to captivity. i am not trying to be rude but you have not conviced me yet.
Likewise, you have not convinced me
If you know that they do not all live on concrete and need snow, then why did you bring it up on this, a very general thread about whether the animal could be kept in captivity?
Do not quote studies at me without producing a source, I could write a study saying unicorns exist if I wanted to, that doesn't make it fact. What's more, I would argue that species can very quickly adapt to warmer lifestyles, take giant otters swmming in icy waters at chestnut for example. Plus, I ask once again why you only cite polar bears in this category, if the idea of acclimatisation is such a problem for you why do you not say that arctic foxes, seals and reindeer are unsuitable for captivity.
And why can polar bears not have behavioural opportunities to keep them cool and captivity? Many zoos do give their animals cooled dens to sleep in as well as ice cubes, blood balls, misters, snow machines, mud wallows and sub-zero pools.
And to your oxford study (we're getting better) I would argue that this is because polar bears are frequently given poor exhibits rather than they cannot be kept in captivity. Even recent exhibits (San diego's "new" polar bear plunge springs to mind) are being built from the old formula of "concrete mountain, big pool" and, for this reason, many of them pace, head-bob etc. I bet you don't see this stereo-typy (unless it was pcked up at other institutions) at the previously mentioned ARoL, Scandanavian Wildlife Park and HWP.
Actually, even the authors of this report say that polar bears could be kept if the situation was "improved", as such they agree wih my arguments that polar bears
can be kept in captivity.
And don't tell me that progressive zoos have moved out of the species. Some of the most progressive zoos in the world (Bronx, San diego, Omaha, Singapore) keep them. I would guess that generally the main factor in zoos phasing them out is not being able to afford a good exhibit rather than the idea that one could not be built.