The dog

You like people and don't bother concealing it. You go over first, and when something's good you say so. With someone like this around, the awkward opening of a gathering ends quickly.

The flip side is that everything reads. Trying to hide being hurt tends to make it more obvious, so saying it out loud is usually the easier route for this type.

Works well with

The capybara — Most things are fine. Few people have seen you angry.

Clashes with

The cat — Interested, but not going over first.