It is a popular pet due to its size, good temper, and a lack of inherited health problems. As purebred dogs, beagles have always been more popular in the United States and Canada than in their native country England. They are also used for this purpose in a number of other countries including by the Ministry of Agriculture and Forestry in New Zealand, the Australian Quarantine and Inspection Service, and in Canada, Japan and the People's Republic of China. Larger breeds are generally used for detection of explosives as this often involves climbing over luggage and on large conveyor belts, work for which the smaller Beagle is not suited.