The Anglo-Saxon ploughmen image

[forestperson]

The image used for the BAHS forums shows ploughmen with a couple of strange plough beasts. The Wikimedia commons description says 'Ploughmen.--Fac-simile of a Miniature in a mediaeval manuscript published by Shaw, with legend "God Spede þe plough, and send us korne enow." Note that "þe" should be transliterated "the". Project Gutenberg text 10940 Title: Manners, Custom and Dress During the Middle Ages and During the Renaissance Period'.

275px-Anglo-Saxon_ploughmen.png (51.19 KiB) Viewed 51039 times

Does anyone know why the beasts have flat faces? They don't look like horse or ox faces.

Any information about this image will be gratefully received.