What on earth happened to it?

[Borderjumper]

A wolf will kill for the sport.
I used to live on a farm out in the country. We had a Great Dane that we had raised from a tiny puppy. He was a gentle giant.. lol in fact his name was Wimpy. One day I came home from work and a goat was dead out in the field. Figured it was a coyote but thought it a bit odd that the dog hadnt chased it off. A week later I came home and the dog had a 6 month old calf by the neck trying to take it down. The dog didnt do it because he was hungry and I dont even think he did it from instinct. I think he was bored and it was something to "play" with. The calf was fine, the dog didnt fare so well.

Im wondering if your puffer didnt get bored and started poking or bumping the nem? And as it goo'd the more fun it became?