Roughly 80% of the dogs used by TSA have floppy ears. The other 20% with pointy ears scare children so as pointy-eared dogs retire they are being replaced by dogs with floppy ears.
The TSA spends $26,000 to $42,000 training each dog and accompanying dog handler. Though they’re trying to make the dogs friendlier-looking, they don’t want kids to pet the dogs but did you know that dog handlers are given “baseball-like cards for [their] dog” to “give to children and adults who want to greet the canine while its working” which may be the most valuable feature of the program.