President Biden repeatedly watched his German shepherd Commander attack Secret Service members, who wished each other a “safe shift” as the number of incidents mounted — with one exasperated workplace safety professional urging the use of a muzzle, agency records show. The number of dog attacks involving Commander, who the White House said in February was given away after more than two years terrorizing professionals assigned to protect Biden; and former first dog Major, who was rehomed in 2021 after also attacking personnel; could top three dozen, the newly surfaced records suggest.The 81-year-old president, who reportedly accused a Secret Service...