More Floppy Ears 

They really do seem less threatening.

Much of what the TSA does in America is rightfully criticized as security theater. Far too often, this agency does things which give an appearance of security while actually doing very little to provide it. However, a forthcoming change they plan is both all about appearances and likely a good move. In an effort to avoid frightening travelers, the TSA will be employing more floppy-eared dogs instead of pointy-eared dogs.