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WP20645

Brown Rat (Rattus norvegicus) skull showing how lower jaw is moved forward so that upper incisors can be used to scrape away and sharpen lower incisors.

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Brown Rat skull
WP20645 Brown Rat (Rattus norvegicus) skull showing how lower jaw is moved forward so that upper incisors can be used to scrape away and sharpen lower incisors.
Rodents

Rodents

       
           
Brown Rat skull Two rats on a ladder Red Squirrel Marmot lounging on grass Young Grey Squirrel eating hazelnut on brown background Brown Rat standing