Dead Dog/Alive Dog? --Spoilers

[Guest7]

Good News and Bad News, about that 1st dog.
I decided to blow it up. I had to use 2 dynamite sticks, and it worked and not much blood. Poor thing, but it was it or me.
Then I used the PicAxe a few times to be sure, and found a rock and droped it on the dog. The dog didn't move. I had to kill it---or I thought I killed it!? And I got real close, not one eye flicker.
I went looking around, and came back a few times, just to be sure the dog was dead--dead.
Last time I went to see, the rock was still there, but the dog was GONE.

Is this a zombie dog? Or did someone/something get it? There were no drag marks, like someone had drug it, nor blood trail leading away.

Does anyone know what happened to the dog; that I just blew up, axed and droped a large rock on and for sure thought it was dead?