To be fair, my little oegb hens were small enough that they floated for a few minutes before they got too wet (we had to wash birds in 4H for show, so they were very closely watched while in the water)
We had a Shepherd mix and have another currently.
First one was absolutely a love bug. Loved everyone she saw. Used to joke she'd just let a burglar in because she thought he was a friend.
Current one does not like people she doesn't know. And even then, some people she never warms up to...
Family friends (Distant) Had a Dalmatian at some point. I was little (>10), and he was alright. Super excitable and not a great thing to have his face at the same height as mine, but I wouldn't say he was aggressive or mean.