Mr and Mrs Biden are very fine dog owners.
As the BBC News website reported yesterday:
A Joe Biden presidency means the return of a long-held tradition of pets in the White House.
The President-elect and his wife have two dogs at present: Champ and Major. They are German Shepherds. Champ, who was then a puppy, was given to Joe Biden in 2018 by his wife. Major was fostered and then adopted, also in 2018, from the Delaware Humane Association.

Here is another picture of the two dogs. This time featuring Mrs Biden.

So GSD Major will be the first shelter dog that from January, 2021 will reside in the White House.
The 2020 presidential election is bringing a slew of firsts into the White House: the first woman vice president, as well as the first Black woman and person of South Asian heritage to hold the position. The first first lady to continue working a full-time job. The first Jewish spouse of either a president or vice president.
But President-elect Joe Biden is bringing yet another first this January: The first-ever shelter dog will now reside in the White House.
Whatever one thinks about the current politics it is brilliant that dogs are back in the White House.
Maybe President-elect Biden should think of a more formal role for Champ and Major!