# What exactly does spawn vermin?

**URL:** <https://discourse.cataclysmdda.org/t/what-exactly-does-spawn-vermin/26444>\
**Category:** The Bunker\
**Created:** [June 5, 2021, 3:29am UTC](https://discourse.cataclysmdda.org/t/what-exactly-does-spawn-vermin/26444 "2021-06-05T03:29:51Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Valase](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/valase/32/6972_2.png) [@Valase](https://discourse.cataclysmdda.org/u/Valase)\
**Post date:** [June 6, 2021, 6:15am UTC](https://discourse.cataclysmdda.org/t/what-exactly-does-spawn-vermin/26444/4 "2021-06-06T06:15:27Z")

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> [@Bio](#):
>
> Where and how do carrion feeders appear?

As I’ve stated in a [post](https://discourse.cataclysmdda.org/t/how-come-cockroaches-ignore-zombies-arent-they-carrion-creatures/26057/22) in another topic:

> [@Valase](#):
>
> Both the `giant cockroaches` and `pregnant giant cockroaches` “lay” (spawn in) eggs every 7 days, 1 single egg from the [giant cockroach](https://github.com/CleverRaven/Cataclysm-DDA/blob/cb02195d9fb5ba71f35a105be4104c3d8883065c/data/json/monsters/insect_spider.json#L239) and 3 from [the pregnant ones](https://github.com/CleverRaven/Cataclysm-DDA/blob/cb02195d9fb5ba71f35a105be4104c3d8883065c/data/json/monsters/insect_spider.json#L305).

…and…

> [@Valase](#):
>
> They hatch once the egg item has “rotten away” (similar to (fertilized) bird eggs) [based on the file](https://github.com/CleverRaven/Cataclysm-DDA/blob/cb02195d9fb5ba71f35a105be4104c3d8883065c/data/json/monstergroups/eggs.json#L94-L99).

Nymphs spawn from these eggs, which then turn into `giant cockroaches` after 7 days, and…

> [@Valase](#):
>
> After [7 additional days](https://github.com/CleverRaven/Cataclysm-DDA/blob/cb02195d9fb5ba71f35a105be4104c3d8883065c/data/json/monsters/insect_spider.json#L242), they also turn into `pregnant giant cockroaches`.

In short: The corpses don’t actually (at least last I’ve checked) make any difference. It’s the offspring of existing cockroaches.

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