Probably the most "attention" the Alphas get is some coed on Yik Yak posts, "OMG, I was on my way home from a party, kinda drunk, and this guy tried to mug me! Then out of nowhere, a bunch of dogs ran him off. God is watching! #blessed" followed by a chorus of, "Right, that happened, sure."
If anyone does start reporting about dogs breaking up crimes on campus, that's just a weird enough story to get shunted over to Special Investigations, where Murphy promptly doesn't do a damn thing about it except tell Billy to try not to get caught on camera.