Does Animal Focus basically lock you out of any other spells abilities that are a polymorph effect?
If you mean the Hunter's Animal Focus, it is not a Polymorph effect. The only exception I know of is with the Feral archetype, but even then, only visuals of that effect is a Polymorph, so that it may stack with the archetype's Wildshape ability.
Ah. So i can benifit from it even if i have something else in play as a feral hunter.