3 Animals That Are Smarter Than You Thought

Dolphins, crows, apes — you know the drill about smart animals. But there are lots of animals that are smarter than you think. Not everyone thinks they’re pretty, but scientists know they’re smart.
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Sources:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2774594/
http://www.sciencedaily.com/releases/2009/02/090212141143.htm
http://www.sciencedaily.com/releases/2007/03/070308121856.htm
http://www.nytimes.com/2010/07/06/science/06angi.html?_r=1&src=me&ref=homepage
http://ecotheo.org/wp-content/uploads/2014/01/Jacobs_AB91.pdf
http://www.nytimes.com/2010/07/06/science/06angi.html?_r=1&src=me&ref=homepage
http://sites.psu.edu/psych256fa13/2013/09/19/similarities-between-humans-and-pigs/
http://www.nature.com/scitable/knowledge/library/animal-cognition-96639212