This muff is an absolute favorite of my piggies. They alternate between this, and the hidey hut also sold on here. They look so cozy snuggled up in it, sleeping. It's probably big enough for two pigs, but mine do not like to share. So when one is in here, the other is in the hut. I was skeptical of the price, but it is very well made. I would absolutely buy another when this one wears out, but I do not foresee that happening for many years.