Have any idea's

I got Aspen a few weeks ago from a Foster home he's from south caralina a high kill shelter and the shelter brought him to Conn. anyway they said they think he's a terrier + cattle dog mix i can see the TERRIER but i'm not sure about the cattle dog i've seen a few and also alot of pictures and none of them look like him.

So i thought i'd put this up here and see what you think any
idea of what he might be mixed with ?

I know he as terrier because he has that little face :) and i've already gone though 18 tennis balls :D
He LOVES those balls LOL:)

Here's a Picture

http://i18.photobucket.com/albums/b117/Suokem/01.jpg

And here's another

http://i18.photobucket.com/albums/b117/Suokem/CT151.jpg

He's also only 13 lbs
I think he thinks he mixed with Great dane, Rottwiler, Pig and
some Rabbit LOL :) :) :)

I think he looks like a cute, happy cattle dog/terrier

he might as well hace ACD since the blue and red ticking you can see in legs and collar, which is distinct feature of ACD´s

i THINK SHE IS SO CUTE!