Grow Hair Using Keyframes?

I’m using keyframes to animate and deform an object and I’d like to grow hair on it at the same time, sort of like a werewolf.

Is there a way to link the start of particle generation and/ or different materials to a particular frame?

Toodles,

Wormer

There’s a way:

http://www.blender.org/cms/New_Particle_options_a.721.0.html#3296

But I havent had a chance to play around with it yet.

That looks like that might be the ticket! Thanks.