Who would be afraid of a mouse like creature only a few inches long?
Plenty of people! Hell, cockroaches are my phobia, and they're smaller than shrews! :P
Anywho. Good stuff! Personally, I would have had the shrews stay the same size, but reproduce much faster. Additionally, I would make the shrews stomachs a 'bag of holding' of sorts, so the shrews NEVER stop eating.
MILLIONS OF RAVENOUS SHREWS CHEWING AWAY ALL LIFE ON THE ISLAND! AIEEEEEEEEEEEEE!!
C'mon guys. We can get 29 comments bashing a 50 foot tall demon with tusks but no comments for venomous killer shrews? The weird thing here is that most shrews are poisonous, and do consume their own body mass in food every couple of hours. Go to Comment
Argh - gaint, ravanous, killer screws - run for your lives
Brings back fond memories of all those '50s B movies
Just love it
3/5 for a basically sound concept
+1 for being easy to fit into almost any setting (if your world doesn't have magic, just make Greiges a bio-enngineer / geneticist / whatever)
+½ for the entertainment value