The Australian governments double meaning

The target species is wild dog and fox the non target species is dogs and cats.  Government body speaking in tongues in a sign.

Good on you  National Sparks and Wildfire. For those who do not know National Parks and Wildlife became National Sparks and Wildfire after the Canberra fires.
We pay people to do this type of sign shame on us and our school system.
Whats the difference between dogs and WILD DOG? I know one is pissed off!