Have you ever wanted to own a pig but found the prospect of living with a 250-lb. (110 kg) hog to be too much of a commitment? Well, then the micro-pig is for you. The adorable little porkers start out at less than a pound and grow to weigh somewhere between 40 lb. and 70 lb. (18 kg and 30 kg) as adults. They don't shed and can be trained to use a litter box.