In a reanimating biome, running an animal breeding program has the added challenge of zombie outbreaks in the livestock. If not stopped in time, a rare breeding stock can be completely lost. The most common causes of death in my breeding programs are:
- Old Age
- Starvation
- Berserk Dwarves
- Military Sparring Accidents
Most of these can be easily managed. Death by old age has been the most challenging because there is no indication of an animal's age in the [
a: Assign Animal to Chain] menu. However, there is a color indication of which chain they are currently assigned to in that menu. Most war animals live to about 30, with Gorillas and Rhinos living up to 50 and Elephants up to 70. With 10 available colors, you could get an age resolution of +- 2 years for most war animals, +- 3 years for War Bears, +- 5 years for Rhinos and Gorillas, and +- 7 years for War Elephants as the age brackets expand to account for longer life spans. This way the oldest animals can be isolated from the rest of the herd before they turn to zombies. Just assign all animals born from year x to x+n to a chain of a certain color, and reassign chains every n years, and when x approaches the upper lifespan, pasture them anywhere you like your zombies to be.
I've tested all the metals I currently have access to and found 14 color variations.
Edit: the colors depend on what graphic pack you are using. These were found using the Meph+Vordak (lite) 32x graphics that are bundled with the Lazy Newb Pack:
MaroonOrange- Birmuth Bronze, Steel
- Steel
YellowLimeGreenTealLighter BlueDarker Navy Blue- Pigtail Rope
- Cave Spiker Silk Rope
- Giant Cave Spiker Silk Rope
PurpleMagentaGraySilverWhiteBlackThe following remain untested:
- Billon
- Ramie, Rope Reed Ropes
- Sheep, Alpaca, Llama Wool Ropes
- Trifle Pewter
- Adamantine
- Flashing / Twinkling / Blazong / Singing etc. Metals
- Other Exotic Rope Materials
There's probably a way to tell an animal's age, or to give them a nickname that appears in the menu to assign them to cages / pastures, but I haven't found it yet.