The greening of polar bears in zoos

@article{Lewin1979TheGO,
  title={The greening of polar bears in zoos},
  author={Ralph A. Lewin and P T Robinson},
  journal={Nature},
  year={1979},
  volume={278},
  pages={445-447}
}
POLAR BEARS (Thalarctos maritimus) normally have creamy-white fur, presumably an adaptation for camouflage in a snowy environment. However, during the summer of 1978, the fur on the back and sides of three adults in the San Diego Zoo turned green, though the animals remained otherwise healthy. (Of these bears, one female was born in the zoo in Calgary, Alberta, Canada, in 1966 and was transferred to the San Diego Zoo in 1969; a second female was born in the wild, having been caught at… CONTINUE READING