After attempting to cure a plague of histamine and giving up, I regretted making the Jungle such a hot spot. If old age didn't kill these creatures, the bacteria in the Jungle would. Old age claimed a life first, though. Antonio, the first gen male Grendel, was the first to die around 4 hours and 38 minutes. Since my world was at the population limit, a little gen 5 male grendel hatched. Not a second later, an old gen 1 male Stinger Norn died of starvation. This left the Norn Terrarium group without a male, though there were two or three in the Jungle. Even the stinger baby who hatched was female.
While watching the Grendel, one of the gen 1 Stingers, Miai, died. She died of starvation in the Jungle, which had more then enough food. A little stinger male hatched, and I moved him into the Norn Terrarium. And then Tsiyi died of apparently nothing. He wasn't old, diseased, or starving. Living in the Jungle might have gotten to him though. He was one of the sicker ones when the histamine plague hit. I then noticed that there weren't any Grendel eggs.
Slightly worried for my favorite group of creatures in this world, I
decided to export the latest baby, just in case the whole population
died out. All of the Grendels
were older then an hour, and a decent amount of the were in the old
stage or higher. There were two or three Grendels still below old age
though. I also moved the Jungle Stingers to the Meso, since the Grendels
and Norns were getting into little slap-fights here and there. To both
breeds credit, neither side had killed one another yet, they just didn't
like each other very much.