i had a sow we caught had a litter in pen one got out and i got rid of the rest the one that got out started hanging with the horses now the little one is about 150lb sow and still follows the horses across the oasture and everwhere they go. the horses protects the pig from the dogs. if a dog gets out and after the pig the pig will run straight for the horses and will get under them then the horses go to kicking at the dogs not a good situation. its pretty funny to see two horses going across the pasture with a wild pig behind them. they eat the same food together the pig rubs on their legs its crazy.