One of those “life after mankind” shows talked about dogs, and the role that rabies will play. They said that rabies was going to run rampant if some kind of SHTF situation happened. They were saying that rabies was going to take its toll on domesticated dogs shortly after the event. But I think its going to take a few years for rabies to make a rebound. The reason being, rabies is not near as widespread as it used to be. But that does not mean it can not make a comeback.
Lets take Texas as an example:
DSHS does rabies vaccine air drops in parts of Texas where rabies has been reported. A rabies vaccine pill is wrapped in meat, and then dropped across a given area. Source – Texas DSHS rabies air drop
Most responsible pet owners have their dogs vaccinated against rabies.