I am a permitted  wildlife rehabber and often have to take injured or orphaned raccoons and possum to my home.  The friend of Texas Wildlife center recommended this cage. I could not be happier. The wheels allow easy movement, the large opening allows quick clean up and the 2 levels allow enough room for the animals to keep mobile. WYfaor delivered within 2 days. Instructions very easy to follow so a snap to put together. This cage is perfect for any small mammal that likes to climb and needs room for exercise