40 dogs bought yearly
THE Police K-9 Unit buys about 40 dogs every year. They cost between $8,000 and $10,000 each and come from countries such as China, the Netherlands, Australia and Britain.
When it comes to choosing the dogs, officers look out for whether they like to play with toy balls. This is because playing ball is used as a reward in training the dogs to sniff out drugs, explosives and bodies.
More than half are trained to detect narcotics at Singapore's checkpoints.
Dogs are groomed daily and work for about 12 hours a day. Each has an average working lifespan of seven to eight years, after which they will be put up for adoption. But dogs which are too aggressive may be put down.