Notes for June 29th

• The evolution of cats is interesting, even if the image accompanying the article doesn't make any sense.
• Generalists go extinct too.  Not sure I really buy the idea that they might be less like to.
• Allen's rule is about the length of extremities in tropical and temperate animals.  Apparently there's now some evidence that temperate/cold weather animals have shorter limbs (or at least, shorter beaks).