What dog have I got?

Hello forum,

We have moved in to a farm in Belgium, and the former owners have left us a dog. After he got used to us, he became a perfect companion, inspite of spending years locked in a cage and being fed potatoes.

I would love to know what mixture of other dog has produced this marvel. His name is Sloefke.

 

Handsome, eh? Produces a deep and loud woof so it suited the farmer, who said he had run over his previous dog with the tractor, and this smaller one didn't eat as much. Having a dog locked in a cage as a sort of alarm system is a common sight here in Belgium.

Here is dog as first seen. He had many enormous ticks on his head.

 

One feature of the dog is the sticking up ears. Is it possible it's based on a French Bulldog, but with a snout?