Minnow pet beds are made of fleece and foam. They are soft, warm and cozy. Minnows measure 12" long, 8" wide and 5" high. Very roomy for your sugar glider, ferret, guinea pig or other small pet. The liner can be pulled out for spot cleaning or to use a lint brush for fur removal or the whole bed can be machine washed. Minnows come with sewn on eyes. We have been making pet beds for some years. We have perfected the type of foam we use so the mouth stays open on its own. We do not use wire in the mouth to keep it open. The bed is soft for your pet, but the shell is firm to keep its shape. Pet Threads offers many different fabric choices.