Somehow our dog adjusted to DST on his own this time. I don't know how, he normally wakes us up at 7:30 am to go out in the morning (right before my alarm goes

Somehow our dog adjusted to DST on his own this time. I don't know how, he normally wakes us up at 7:30 am to go out in the morning (right before my alarm goes off)... since Sunday's DST change he's been waking us up when the clock reads 7:30 under DST - I don't know what cue he's using, it's got to be traffic or a neighbor, my best guess is that a neighbor is letting their dog out at the same time every morning and our dog hears it.