Good and BAD !
My Adult Female Becca and Junior Male Ichabod are pretty calm, BUT...
My Adult Male Sneakers is an absolute TERROR. He won't let any of the Nurses or Doctors come close to me, and he's big enough to enforce it.
I have to tie his Leash off on the Table, and walk away before he calms down and lets the Staff approach him. I've never had a Dog which was as protective for me as he is.
Actually, it was the Vet who got me to do it that way. Seems that many Dogs who are aggressive like that, will settle down, when there is some distance between them and their Providers/owners.