An opossum is old enough to be on its own when its body is about 6 to 8 inches long (not including the tail) (15-20 cm) and it weighs over 7.25 oz (200 grams.)
At this size, they look like miniature adults with long, puffy fur and are capable of finding their own food and surviving in the wild. If the opossum is smaller or appears injured, lethargic, or has signs of illness, it is not old enough to be independent and requires assistance.
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An opossum is old enough to be on its own when its body is about 6 to 8 inches long (not including the tail) (15-20 cm) and it weighs over 7.25 oz (200 grams.)
At this size, they look like miniature adults with long, puffy fur and are capable of finding their own food and surviving in the wild. If the opossum is smaller or appears injured, lethargic, or has signs of illness, it is not old enough to be independent and requires assistance.