stripes

Tigers can no more change their stripes than leopards can change their spots. That's a good thing too, for their unchanging patterns, as individually distinct as a human fingerprint, make it easier to track any single tiger over time. That process is about to become even simpler with a computer programme that creates a three-dimensional model of a tiger's skin and can compare different shots of an animal taken at different times or angles. The programme is the brainchild of Lex Hilby from an organisation called Conservation Research and it could allow conservationists to track surviving…
It's a whole new week, so I'm moving away from the artiodactyl theme (for now, at least) and the PotD will probably take on a more random aspect for a while. Today's photo is of the tiger cubs Terney (center, with tire), Changbai (left), and Koosaka (right), born at the Philadelphia Zoo a few months ago. They are Amur (or Siberian) tigers, Panthera tigris altaica, the largest of the extant tigers and also critically endangered. While the zoo notes that they contribute to tiger conservation initiatives like the Tiger Conservation Fund, it seems that these cubs will remain in captivity and…