We're hoping for shepherd, that would make a great service dog. If you look at a web site called the Boarder Collie Museum they come in brindle and have the saddles but not the more solid color of Tater and Maeb so hmmm...
Looking on line their shape is still BC-Aussie. I looked at rough collie puppies and some of them start Tater colored but their noses are pointier. Boxers would have rounder heads and squarer noses by now.