The humans realized, at least unconsciously, that they were in a loose trap.
By all appearances, the humans did not realize this.
The humans realized our true objective faster than we had anticipated.
Finally the remaining humans realized that they had to address this problem.
Furthermore, some humans do not realize how adaptive and quick dingoes are.
If the humans had realized our potential, they would have destroyed us in fear of what we would do to them.
Suddenly humans realized for a fact that they aren't anything special in the universe.
When humans realize that they are all connected, harm done to another will never benefit the initiator.
Few humans today realize that paper is actually an organic material, manufactured from dead trees.
And of course the humans realized this too.