Brown Rat (Rattus norvegicus). Young, 'pup', with eyes opening at 13 days of age. Older young behind, with eyes fully open.

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Brown Rat (Rattus norvegicus). Young, 'pup', with eyes opening at 14 days of age. Slightly older young behind, with eyes fully open and functioning at estimated 20 days.

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Size: 5616px × 3744px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No

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