Wildshape and bite of the wereX

[Hiro Quester]

How does the bite of the wereX spell interact with wildshape?

I see how the enhancements to str, con, dex, work. Those are very useful.

But what happens when bite of the wereboar is cast while in, say, tiger wildshape? You gain a bite attack, but you already have one. Does your bite attack change to the boar's bite attack?

Or does your regular bite now apply 1 1/2 time str bonus (as per spell description), rather than 1/2 str?

[Flickerdart]

Usually when a template adds a bite attack, it says "if the creature has one already, use the better one." This seems like a good ruling here too - you gain a bite attack from being a boar and from the spell, and can use whichever (but probably want to use the better one).