It's obviously a matter of opinion L4H, but to me, what he wrote above is just setting the stage, or explaining why he has that irrational fear. Out of context, sure it sounds bad (very bad), but I would hope that readers would read the whole article and get the 'moral' of the story
In fact, I think him using such intense stereotypical/negative descriptors in his writing helps the cause. Contrasted against how happy go lucky the pup actually is/was, it shows you just how much more laughable these stereotypes are