But most martial arts have real world applications though, though ground fighting is something that should be avoided as much as possible, because asphalt + possibly glass shards is not a good combo for your health.
Why do dogs sniff? Dogs sniff to identify, for the majority of cases it is to sniff whether or not there is danger. A dogs sense of smell is much greater than that of a human being and it can smell things from a further away distance than many other animals as well as humans.
Separation anxiety is a common cause among dogs in general, but hounds do have a reputation for boredom-related howling. If the howling begins as soon as the dog is left alone, it is likely to be separation anxiety.