@Zettour got it right, the dog is 1/2 American Pit Bull Terrier
Am. Pit Bull Terriers actually can carry dwarfism, so a lot of dogs that are considered basset/corgi/dachshund mixes could actually be pit bulls with dwarfism, especially since it is much more common.
While pit bulls have short single coat, when a short coat is mixed with a long coat there's often the result of a wirey type of coat. The result is not unique to American Pit Bull Terriers (just the cattle dog and golden retriever mix would likely result in a similar hair coat).
https://i.poastcdn.org/492d186208afb912b236b3c6b03e3f3b51af699f6cd651a7d3a15c29389820cc.png