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Crows show ability to reason
Posted by Dr. Dolittle on December 25, 2012
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Dr. Alex Taylor from The University of Auckland has demonstrated that New Caledonian crows have the ability to perform causal reasoning, which is the ability to infer that something you cannot see may be the cause of something. According to the article, this is the first study to experimentally demonstrate this ability in a species…
Bigger brain = less offspring and guts
Posted by Dr. Dolittle on August 15, 2012 Studies of guppies show that bigger brains may mean “smarter” fish, but less offspring. Credit: Marrabbio2/Creative Commons …at least for guppies. Dr. Alexander Kotrschal and colleagues at Uppsala University (Sweden) either shrank or grew the brains of guppies over multiple generations to create animals with up to 8-10% variations in brain size. To test for “smartness” they had…