Their tail is longer than their body. They use their tail to swim and hang upside down. They go to sleep hanging upside down by their tails. When baby opossums are born, they stay in their mother's pouch until they are about two months old. Then they hang onto their backs.
Opossums are marsupials.
They have been on earth for sixty million years. We still find them interesting today. The monarch butterflies are special. They are three to four inches long. They are found in the United States and in a part of Canada.