President-elect Joe Biden broke his foot while playing with his dog, Biden's doctor, Kevin O'Connor said. 

The president-elect suffered the injury on Saturday. 

Initial x-rays did not show any obvious fracture. A more-detailed CAT scan revealed otherwise. Tiny fractured off two small bones in the middle of his right foot could be discerned in the subsequent imaging scan. 

Biden's injury will will likely require wearing a walking boot for the next few weeks. 

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