How I Breed Litters

[KingHarry]

Litter breeding is completely randomised. I do this using dice in a certain order.

A little dice terminology for anyone who needs it - d6 means a six-sided dice, d20 means a 20 sided dice, etc.

• Number of kits. Roll one d6. Exceptions for hybrids, see below.
• Gender of kits. Roll one d6. 1-3 = male, 4-6 = female.
• If genetics can produce tortoiseshell, male tortoiseshell. Roll three d20s for each male kit. Positive if total is 4 or less. 0.05% chance (greater than real life).
• Use genetics generator and other resources to find possible appearances. Translate possibilities into dice and roll.
• Physical mutation. Roll three d20. Positive if total is 20 or less. 14.25% chance. If positive, roll one d6. 1 =  tooth/claw/polydactyl mutation, 2 = colour mutation, 3 = leg mutation, 4 = tail mutation, 5 = fur mutation, 6 = ear mutation.
• Disability. Roll three d20. Positive if total is 20 or less. 14.25% chance. If positive, roll one d4. 1 = sensory issue, 2 = visible disability, 3 = unseen issue, 4 = deadly issue. You can either decide on the disability yourself or ask me to randomise one.
• Traits from parents. Roll two d6. 1-4 = trait in order of listing on form, 5-6 = no trait. One dice for each parent. Traits overwrite rolls unless male tortoiseshell. Each parent has a 66.67% chance of passing a trait on.
• Stillborn. Roll three d20s. Positive if total is equal to or less than 15 + season modifier + age of mother modifier + any other modifiers. Modifiers below.
• Death during childbirth? If yes to the possibility of death during childbirth, roll three d20s. Positive if total is equal to or less than the stillborn roll.

Stillborn Mofiders:

Season:

Spring/Newleaf (March- May); -2

Summer/Greenleaf (June- August); 0

Autumn/Leaf-fall (September - November); 2

Winter/Leafbare (December - Febuary); 5

Age of Mother:

12 - 15 moons; 5 

16- 20  moons; 3 

21 - 25 moons; 1 

26 - 80 moons; 0 

81 - 90; moons 1 

91 - 100 moons; 3 

101+ moons; 5

Other:
Hybrid parent: 5
Major mutation parent: 5

The highest stillborn probability is a 12 - 15 or 101+ moon old cat in winter/leafbare, where one parent has a major mutation. 15 + 5 + 5 + 5 = 30, thus the probability of a stillborn is 46.25%.

The lowest stillborn probability is a  26 - 80 moon old cat in spring/newleaf. 15 - 2 + 0 = 13, thus the probability of a stillborn is 3.58%.

For tribe kits, I also roll one d6 to see if they will be a prey-hunter or home-guard. 1-3 = prey-hunter, 4-6 = home-guard. As of the Tribe of Ancient Roots become RootClan, this roll is no longer performed.

For kits of a hybrid with 12.5% or over wild content, the max litter size is 3 and cannot be increased with the Litter Size item. Roll 1d6. 1-2 = 1, 3-4 = 2, 5-6 = 3. The Hybrid Fertility item may be used to increase the possible litter size to 6.

If you do not like the outcome of your kit, you may purchase a kit reroll item in the shop that will allow one kit per item to be rerolled. Rerolls can only be applied once per kit; you cannot keep rerolling the same kit over and over.

If StarClan's Protection is applied, the kit does not receive a disability roll. If Kit Appearance is applied, the kit does not receive a trait roll. If Kit Appearance is applied and colour mutation is rolled, the mutation is ignored.

Mutations and disabilities gained through breeding cannot be major/impossible without the use of the corresponding item.

If genetics for both parents are provided, kits will roll for genotype on a d4 per gene provided. All unprovided genes will be guessed on or ignored where possible.

This method may change in the future. Any changes will be added to this method.