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Top 10 Smartest Animals

        Animals | Animal Facts

6 - Pig

Despite a reputation for gluttony and poor hygiene, pigs are actually highly intelligent animals. Both domestic and wild species are known for their ability to adapt to a variety of different ecological conditions. They seem to be at least as trainable as cats and dogs, and certain domestic pigs have become a favorite pet in the U.S. Pigs are also extremely flexible. Unlike most other ungulates, which are strictly herbivorous, pigs and their relatives are omnivores with a diet that sometimes includes worms and small vertebrates. Where they have been introduced around the world, pigs tend to out-compete the native species. Though devastating to the native species, this trend is yet another strong indication of pig cleverness.