How to have: an animal companion, a witch's familiar, or something more exotic like an elemental spirit.
These questions arise in the style and settings of the games I play and run. And I'm not satisfied with how the Core book addresses it for Savage Worlds. Now to be fair, I don't think the Core book could have gone into the level of customization and detail that Companions & Familiars does. I think there would still be a market for a 'Companions & Familiars' book even if the Core book had an acceptable (to me) way of handling animal companions. But in the end the Core book Beast Master Edge is not how I want to address the questions at the beginning of this review.
I am very satisfied with how this book addresses those questions though.
You build a companion that matches your character and the costs and justifications for the various abilities are laid out clearly. I've built elemental companions, griffon mounts, and skeletal horses. I've yet to find a companion archetype that can't be built.
Keep in mind that your Storyteller needs to be aware of what your companion can do and you need to have built your companion ahead of time before you play, to keep things Fast, Furious, and Fun.
[5 of 5 Stars!]