A White House photo shows Biden's dog Commander keeping the president company as he recovers from COVID-19

• President Joe Biden tested positive for COVID-19 on July 21.
• A White House photo shows his dog Commander keeping him company while working in isolation.
• "Took some calls this morning with man's best co-worker," POTUS captioned the photo.

President Joe Biden has been working in isolation since testing positive for COVID-19 on July 21, but he hasn't been completely on his own.

The Bidens' dog Commander, a German shepherd who joined the White House as a puppy in December, has been keeping the president company as he recovers from the virus.

On Monday, the president's official social media accounts shared a photo of Commander sitting with Biden on the White House balcony as he spoke on the phone.

"Took some calls this morning with man's best co-worker," POTUS captioned the photo.

The president's symptoms have "almost completely resolved," but he will continue to isolate in accordance with the CDC recommendations, Biden's physician Kevin O'Connor said in a memo released Monday.

Dogs have long been the most popular presidential pets. The Bidens entered the White House with two German shepherds, Champ and Major. After Champ died at age 13 and Major was rehomed due to behavioral issues, they added Commander and a cat named Willow to their brood.