The term 'Pursues Relentlessly' can be summarized by two crossword solutions: Dogs (4 letters) and HOUNDS (6 letters). Dogs are a domesticated species of the Canidae family, which includes wolves, foxes, and jackals. HOUNDS are a type of dog that have been bred for hunting and tracking. They are known for their strong sense of smell and ability to follow a scent for long distances. Both dogs and HOUNDS are used to pursue prey relentlessly, making them ideal for hunting and tracking.