Kingdom of Knuffel

Your familiar is a super-stylish racing pigeon! One of the gorgeous iridescent-feathered varieties, who comes when called and is very clever and doesn't hardly ever peck at its messenger tube when you try out sending messages.

Your background makes me think of a brown seal or a sea lion

Hmmmm.
I know that this is inherently a visual medium sort of thing, but for some reason I keep coming back to the sound of a meadowlark when I look at your avatar.

So I guess your familiar is a meadowlark!

You have a shark

a tiny grey mouse

A very cute little red dragon.

You have a gray wolf

a mockingbird !

I think your crow is your familiar.