While all dogs bark, particularly if they sense a threat ... They do make other noises, however — grunts, grumbles and yodels ...

These dogs were originally bred to hunt large game ... Instead of barking, it yodels in a sound that's weird and oddly lovable. This dog's tail forms a tight little spiral that sits on its back ...

Now, the nimble and compact breed is thriving in a much friendlier environment: dog shows. The Danish-Swedish ... s energy levels and emitting soft yodels when strangers are around.