Their bodies are very compact, so even at 90 pounds, Oreo is much shorter than our 100 pound dog. Like people, potbellied pigs have different temperaments. They have a wide range of sounds, from squeals, to barks, to grunts. Caring for a potbellied pig, as with most pets, involves a time commitment. Pigs think they are always hungry, and food has to be rationed so they don't overeat.
Fat pigs can develop many health problems.
If you are interested in learning more, check some of the above links and consider subscribing to the potbellied pig listserver. Pig owners around the world share their information, stories, and suggestions through this e-mail service.