Popular cross-eyed opossum Heidi lives in a zoo in Leipzig, Germany. She became cross-eyed due to poor nutrition when she was a baby.

Opossums are the biggest order of marsupials in the Western Hemisphere. They are also usually called possums, though that term technically refers to Australian fauna of the suborder Phalangeriformes.

Famous cross-eyed opossum Heidi inspects its new enclosure at the tropical hall of the Zoo in Leipzig
Famous cross-eyed opossum Heidi inspects its new enclosure at the newly built tropical hall of the Zoo in Leipzig, June 9, 2011. It is believed that Heidi's crossed eyes could have come from a poor diet when she was young, causing large fat deposits to form behind her eyes. Reuters
A TV cameraman films the famous cross-eyed opossum Heidi transported to its enclosure at the newly built tropical hall of the Zoo in Leipzig
A TV cameraman films the famous cross-eyed opossum Heidi transported to its enclosure at the newly built tropical hall of the Zoo in Leipzig, June 9, 2011. It is believed that Heidi's crossed eyes could have come from a poor diet when she was young, causing large fat deposits to form behind her eyes. Reuters
Famous cross-eyed opossum Heidi inspects its new enclosure at the tropical hall of the Zoo in Leipzig
Famous cross-eyed opossum Heidi inspects its new enclosure at the newly built tropical hall of the Zoo in Leipzig, June 9, 2011. It is believed that Heidi's crossed eyes could have come from a poor diet when she was young, causing large fat deposits to form behind her eyes. Reuters
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