Passage Two 

We a1l love a hero, and rescue dogs are some of the biggest heroes of al1. You will often find them going above and beyond duty to save someone, risking -and at times losing -- their lives in the process.

Rescue dogs are generally found in the Sporting and Hunting Groups，or from the traditional Herding Group. These types include the Bloodhound, Labrador Retriever，Newf oundland, German Shepherd, Golden Retriever, and Belgian Malinois : -all of which are chosen for search- and rescue duty because of their amazing physical strength, loyalty, and their tendency for mental stability.

These types also have a keen sense of hearing and smell--to better locate lostindividuals- and are often able to access hard-to- reach areas. As highly trained animals, they serve in many different fields, including specialist search, snow slide rescue, dead body location, and tr acking.

To overcome obstacles and succeed when perf om1ing the demanding duties of a search- and- rescue worker, a dog must display certain qualities. In addition to intelligence and strength, the dog must be swift， confident, easily trainable, adaptable, and have a high level of stamina (耐力) and endur ance.

A strong sense of group cooperation and an ability to engage in friendly p1ay during dowmn" time is also required of search - and rescue dogs.

A rescue dog goes through many, many hours of intensive training to be fit forduty. Training is not for the faint -hearted. Cer tification training can take from two to three years, working three to four hours a day, three to six days a week, 0ften in group, team- oriented sessions.

Each search- and- rescue field requires different types of training. Rescue training，for instance, includes air scenting ”- where dogs are trained to smell the air for the victim’ s scent (5 气味) and then fol1ow the scent to the person. This alility is crucial to finding victims tr apped under collapsed buildings and snow slide.