Airport dogs sniff out trouble

A special squad of detector dogs is gearing up for a busy time at the UK's airports during the Olympics.

Summer 2012 sees our airports under strain as thousands of athletes and officials pass through, along with all their suitcases.

The work to keep them safe involves 71 sniffer dogs around the country.

Each one is highly trained to smell out stuff that could cause harm or be against the law - drugs, cash, or even illegal meat.