The dog was the first in Connecticut to have been diagnosed with the virus.
Cezar is considered the most accomplished dog in the Border Police dog unit, having the highest amount of findings of any dog in the unit.
The video of the Thursday incident quickly became one of the most popular on Mir TV's YouTube channel, getting almost 500,000 views in four days.
Morrison had gone viral over social media for his videos of him abusing his dog, sparking a 200-strong angry mob crowding outside his apartment within an hour.
"Yes, Major nipped someone on a walk," Michael LaRosa, the press secretary of first lady Jill Biden told CNN. "[He is] still adjusting to his new surroundings."
Major, who was the first rescue dog in the White House, reportedly had a "biting incident" with a member of White House security.
The video, titled 'Bark Mitzva' shows pictures of dogs with kippot (skullcaps), insinuating that the court ruling was so expansive and lenient that it would allow dogs to convert.
The Jerusalem city vet was brought in to treat the dog.
The outlet said Gaga's dog walker was walking the dogs on Wednesday evening when he was shot. The third dog, Miss Asia, escaped and was later recovered.