Does anyone know stuff about them? The ones that are big enough to ride and live to be like 150 years old. It's a dream of mine to someday own one as a household pet and have plants growing in every room so it could wander around and eat the plants! How realistic is this dream for the future? Would they eat umbrella trees or something? Would I just need to have a room built for him to go to if he wanted to swim in a big in ground bathtub or something? A boy can dream.