THEY WILL ONLY IF YOU WANT THEM TO. The way the bite mechanism works really is if you want to play out the effects of being a zombie, you definitely can. Or you can go halfway and recover, etc. If you want your dinosaur to turn into a zombie dinosaur, that's perfectly doable—since it's an infection, maybe her body couldn't fight it off like the last time she ate one or was bitten, or something like that. If you don't want zombie dinos, she'll probably just get mild indigestion.