No. 1 does have a dog, and does bring her to sessions - when the officemate who's allergic isn't in. I've never met the dog.

In college I had two professors who brought their dogs into class or just their office. Both were dreadful - the one who brought hers to class, the dog would just wander up and down the aisles the whole class, clanking its leash behind it and trying to get at any food we had in our bags, while the one who left his dog in his office during class, the dog would start to howl for him. And all the way down the hall in the classroom we'd hear AWOO, AWOO from the dog.

Anyway, I'd prefer not to share therapy space with a dog, unless it were actually an assistance animal the therapist needed for some reason.