Pigs as smart as dogs, chimps

Washington : Pigs can often outsmart dogs and are on about the same intellectual level as our closest living relatives, chimpanzees, scientists have found. “We have shown that pigs share a number of cognitive capacities with other highly intelligent species such as dogs, chimpanzees, elephants, dolphins, and even humans,” said neuroscientist Lori Marino of Emory University, US. “There is good scientific evidence to suggest we need to rethink our overall relationship to them,” Marino said. Marino and co-author Christina Colvin, also from Emory University, reviewed dozens of studies conducted on pigs and other  animals.