Guides for pedigree cat breeders

Short, practical articles for common breeding questions — with bridges to free tools and a MyBreederLine account.

• Queen pregnancy from mating to birth — breeder guide

  How pedigree queen pregnancy is counted from mid-mating: ~65 days expected, window 58–68. Practical overview for breeders.

• Queen due date — how to estimate it

  How to estimate a queen’s due date from mating: day 65 and window 58–68. Free calculator, no login.

• COI and inbreeding in pedigree cats — what the result means

  Wright COI in cats: 5-generation window, risk bands, and how to read the result before mating.

• Kitten weaning and rehoming — 98 days in practice

  Weaning around weeks 4–8 and rehoming readiness ~98 days (14 weeks). Litter schedule from birth date, no login.

• Kitten weighing — why and how often

  Why weigh kittens and how often: daily → every 2 days → weekly → every 2 weeks to 6 months. Schedule from birth date.

• Cat EMS code — reading coat colour

  How to read a FIFe EMS code: breed (3 letters), colour, white (01–09) and tabby (21–25). Example MCO n 09 22. Free builder, no login.

• Cat coat colour genetics — loci A, B and D

  Loci A (agouti), B (black/chocolate) and D (dilute): how to read a cross and phenotype. Free calculator, no login.

• FIFe litter limits for queens — 2 in 12 months, 3 in 24

  FIFe §3.3: max 2 litters/12 months and max 3/24 per queen. How to count windows vs the Free plan cap.