A thought came to Malachi the moment he laid his eyes on the first crystal heart they got to see ever since the world changed.
The crystal heart belonged to the enormous dog that chased his wife.
Fighting that monster dog was an experience Malachi knew he was not going to forget in a while.
That, and the fact that it was currently the strongest monster he had faced since the apocalypse descended.
That particular monster dog outclassed the other things he had to battle since he and David fought it.
The six monsters he and David fought could not even compare, as killing those ones was relatively easy compared to that monster dog.
For one, those mutated cats and dogs were smaller than the monster dog, had weaker physical prowess, and lacked an ability like the sonic scream the monster dog had used on him and David.
Thinking about it now, the fact that Anna was able to survive that thing was nothing short of a miracle to Malachi.