NOT TRUE!!! WITH ALL DUE RESPECT, MOREBASS, THATS HIGHLY INCORRECT... SOME DOGS ARE CROSS TRAINED, BELIEVE IT OR NOT, TO MULTI TASK, AND LOOK FOR VARIOUS SUBSTANCES... IT ALSO DEPENDS GREATLY ON THE TERMINAL... IF YOURE GOIN THRU INTERNATIONAL TERMINALS, YOU BEST BELIEVE THEY HAVE DRUG SNIFFIN DOGS!!! THE ONLY REASON I KNOW, IS BECAUSE I KNOW PEOPLE WHO WORK FOR THE DHS AT LA INTERNATIONAL AIRPORT... ALL IN ALL, BE CAREFUL, DOG...