What commonly described behavioral issue may manifest if a Yoranian is not properly socialized starting in puppyhood?

Small dog syndrome

The Yoranian possesses a brave and spirited temperament, sometimes causing them to challenge threats regardless of their small stature. This boldness requires careful management through proper socialization beginning when they are puppies. If they are not routinely and positively introduced to various benign stimuli, including different sounds, sights, people, and other dogs, they can develop defensive or overly demanding behaviors. This constellation of behaviors resulting from inadequate exposure and boundaries is specifically recognized as the 'small dog syndrome,' emphasizing the owner's need to enforce structure.