Several feats in Pathfinder can grant companions to Player Characters :
- Familiar Bond : a familiar with less special abilities than a standard familiar
- Improved Familiar Bond : improves Familiar Bond to grant all special abilities to your familiar
- Animal Ally : you get an animal companion chosen in a short list
- Signature Mount : you get a mount (any animal that can be trained to be a mount and carry you) as an animal companion, it gives you a bonus on Ride checks
That's great for anyone who wants one of these and is ready to use feat slots for that purpose. But is it possible to apply archetypes to familiars and animal companions you obtain using feats ? This question is especially important in the case of Familiar Bond that gives you an "incomplete" familiar.