It's not a nasty dog, it's a very anxious dog. It is displaying what is known as either whale-eye or half-moon eye. It does not like that level of human contact, they are putting it in a highly stressful situation.
(, Sun 13 Dec 2020, 19:33, Reply)
Apparently he clings to the woman, then 'bites' her, very ambivalent. IIRC he was from a shelter.
(, Sun 13 Dec 2020, 22:41, Reply)