Applied philosophy by Sniffer the Dog....

A man had just settled into his seat next to the window on the plane
when another man sat down in the aisle seat and put his black Labrador
Retriever in the middle seat next to the man. The first man looked very
quizzically at the dog and asked why the dog was allowed on the plane.

The second man explained that he was a DEA agent and that the dog was a
'sniffing dog'. 'His name is Sniffer and he's the best there is. I'll
show you once we get airborne, when I put him to work.'

The plane took off , and once it has leveled out, the agent said, 'Watch
this.' He told Sniffer to 'search.' Sniffer jumped down, walked along
the aisle, and finally sat very purposefully next to a woman for several
seconds. Sniffer then returned to his seat and put one paw on the
agent's arm.

The agent said, 'Good boy', and he turned to the man and said, 'That
woman is in possession of marijuana, so I'm making a note of her seat
number and the authorities will apprehend her when we land.

'Say, that's pretty neat,' replied the first man