I applied the turbo smooth modifier to get a nice smooth body shape for the frog. I came to a problem when I turbo smoothed the frogs body, the mouth of the frog went squishy. I then had a go at editing the mouth. After spending a good hour I found out that I had some extra polygons that were hidden it was these that were making the mouth squishy. So I deleted them and had to reline the vertices back up.