Appreciating the subtle and not so subtle physical differences between individuals or subspecies of animals. I'm not an expert, just a person who likes to troll through the internet to find interesting looking animals. Feel free to point out any mistakes. I am not accepting requests at the moment. I do not claim to own any pictures, and will try to link back to the source.

White-tailed deer (Odocoileus virginianus

  1. The summer coat and body changes of most of the North American white tails are very similar. The summer coat is short and reddish brown, and the necks of males are slender. The winter coats are thicker, brownish grey, and the neck of males are thickened up. [x] [x]
  2. Cous (O.v. couesi) are desert dwelling deer, so are much smaller and paler in color than ones from colder climates. This male is out of the velvet stage, and is still a light tan. [x]
  3. These Peruvian (O.v. peruvianus) are a small subspecies, though larger than other white-tails in South American, are grey in color with darker foreheads. [x]
  4. The endangered Key (O.v. clavium)  deer are the smallest of all the white-tails, and big males rarely weight more than a 100 pounds, easily half the size of northern subspecies. This reddish male, like most Keys, is not particularly afraid of humans. [x]
  5. A melanistic buck, it’s uppersides dark, and lighter tan belly. Melanism is much less common than other pigment conditions in this species. [x]
  6. Piebald deer come in a variety of white to color ratios. This buck has a broad white blaze, neck, belly, and socks. [x]
  7. An abnormal Venezuelan (O.v. gymnotis)  doe, probably leucistic, that is an overall beige color rather than white. Compare with the normal red buck in the background. [x]
  8. A leucistic buck with traces of light tan on his back.[x]
  9. A young albino doe and friend. [x
  10. Bergmann’s rule applies heavily to this species. In general, the closer to the equator, the smaller the deer and the less impressive the antlers. Compare the skull and rack of a Northern buck to the tropical Nicaraguan. [x]