My boys all know their own names. They not only know their names, they know the names of other pigs, which brings up a bit of a sad story; some years back I had 2 males, Sacha and Ojala, who were closer to each other than ANY other animals I've ever seen; they ate together, slept together, etc. Ojala died and Sacha would roam around my bedroom looking for him, making the weirdest cry I've ever heard. Have NEVER heard it from any other pig. Well, I got Sacha a new buddy but they weren't as close.Sacha stopped crying for Ojala.and adapted to his new friend. About a year later, I was talking to someone in my home and happened to mention Ojala; at that point, Sacha came running up to me and once again started making that horrible cry. Makes me wonder not only about pigs knowing names, but piggy memory. (needless to say, at the time I picked Sacha up and cuddled him, and was crying my eyes out.....)