Awesome Possum

My animal of choice is a Possum. The rainforest rains so it probably gets cold. A possum is not able to put on layers of fat, so I thought that it should have A LOT of fur so they can stay warm.Right now they have 15 to 20 inches of fur. I think that they should have 25 to 30 Inches of fur because they have no fat. That way when it's cold they would have more fur to keep them warm in place of fat.