[Jamestown1630]

That doesn't mean that 'electrocution' necessarily refers to death by electric shock.

According to Merriam Webster, it also means severe injury by electric shock.

[Robert DeLong]

That sentence where it used the word shocked, also said to death. It shocked the dogs to death. Thus, the article clearly stated that the shock resulted in death. They also used the word executed.

I have need shocked by an electrical outlet, when my finger accidentally was touching the plug prong. It literally threw me across the room. Had I bee in a puddle of water it would have killed me, because I would have been grounded causing the electricity to continuously flow through me with no ability to break free of the current surging through me. Just like the dog became immobilized with the ice underneath its paws.