It's starting to get there elephantinc,

About the ears, I agree they need to bit slightly larger, and I think the part where they enter the skull needs to be "Flattened" a little, and have slightly more of a corner to them, they look slightly to curvy there at the moment.

I've added an image to illustrate what I mean, hope it helps!

Also I think the eyes sockets are rotated slightly to much, only a little. And the top lips could do to bit more rounded, the way they look now only really happens when a dog snarls, the ones in the image I attached show what I mean.

Apart from that it's looking good so far!
KUTGW