Lixit Guinea Pig Igloo Doctors Foster and Smith - $4.99 Product Description: The Guinea Pig Igloo is the perfect spot for your cavy a cool hiding spot that will quickly become they're favorite hiding place. It's two piece plastic design comes apart for easy cleaning. Measures 12" x 8" x 7". Assorted colors. RattyRat's Review: This igloo works wonderfully as a sleeping den. It's large enough, yet cozy. It really is just the perfect size. It has ventilation along the side. Our rats love it, it's easy to clean, and it's super cheap!