posted on Dec, 27 2009 @ 11:05 PM
The color of an animal's skin can be radically different from the color of it's fur, actually. For instance, one of my cats has brown fur and pink
skin. Polar bears have translucent fur and black skin, which aids in heat absorption.
In the case of these three bears, it could definitely be a case of stress-induced fur loss. I assume that they have ruled out a virus, parasite, or a
fungus as the cause of this, but that is another common cause of hair loss in animals kept in captivity. It wouldn't necessarily fit, though, if this
is affecting spectacled bears in different zoos. Baldness can also be caused genetically, which may be why this species is being affected
specifically. Perhaps a combination of a genetic predisposition built into the species, as well as environmental stress, is the cause. That would be
It could be an environmental issue in the way that these bears are outside of their natural environment and their new environment is causing stresses
that are affecting the bears and making them shed. They aren't eating the same exact foods or being exposed to the same exact things that they would
in the wild.
[edit on 12/27/2009 by ravenshadow13]