The police only call in the dogs when they wish to search and the driver does not agree. The airport doesn't do things this way so the same strategy wouldn't work.

The handler didn't think you looked untrustworthy and didn't hint for the dog to bark.

Drug detection dogs sit down near the bag. They don't bark.

Airport dogs (at least in the baggage claim area) are not sniffing for drugs. They alert on food products that aren’t allowed.

And explosives.

The dogs which alert on explosives are not usually in the baggage claim area.