Marvel's Daredevil: 41 WTF Moments From Season 2
32. No, Not The Dog!
By this stage, Frank Castle has been shown to be a brutal, remorseless man; a killing machine who will do whatever necessary in his quest for revenge.
The slaughter of humans doesn't seem to bother him, so it's a surprise when Finn and his cronies stumble upon Frank's weakness: a dog. It seems that the Punisher has become pretty attached to the canine, and it's only when they threaten to kill Fido that he gives in and begins to talk.
Thankfully the dog was spared, because much like the Punisher feels, it's somehow way worse watching a poor dog get killed the countless humans.