This tool provides a general estimate and does not replace professional veterinary advice.
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What is the Cat Coat Color Genetics Calculator?
The Cat Coat Color Genetics Calculator predicts possible offspring coat colors from parent cats genetics. Understanding likely outcomes helps breeders set expectations and avoid pairing combinations that could carry unwanted or harmful traits.
Cats generally live 12-18 years when they are well looked after. Diet-wise they are an obligate carnivore, which shapes almost every feeding decision you make. Cats live indoors comfortably given vertical space to climb, scratching surfaces, a quiet litter area and daily play that satisfies their hunting drive. Keep an eye out for dental disease, chronic kidney disease in seniors, obesity. These are the conditions cats are most commonly seen for.
Cat quick facts
| Measure | Cat |
|---|---|
| Typical lifespan | 12–18 years |
| Diet | Obligate carnivore |
| Mature at | About 1 years |
| Pregnancy | 63–67 days |
| Litter size | 1–6 |
| Humidity | 40–60% |
How does the Cat Coat Color Genetics Calculator work?
The prediction uses a simplified model of the most influential genes for the trait in question. Real genetics can involve additional modifier genes not captured here, especially for complex or rare morphs. Use it to know roughly where you stand and what to ask about, not to rule anything in or out on its own.
What affects the result
- The genotype (not just visible appearance) of both parents, which isn't always knowable without testing
- Whether either parent carries a recessive trait that isn't visibly expressed
- Modifier genes not included in this simplified model, which can shift real-world results
- Litter or clutch size: since probabilities describe averages across many offspring, not a single guaranteed outcome
How do you use the Cat Coat Color Genetics Calculator?
- Pick your parent A — Orange locus (Orange (O), Non-orange (o))
- Pick your parent B — Orange locus (Orange (O), Non-orange (o))
- Pick your parent A — Dilution (Dense (D), Dilute (d))
- Pick your parent B — Dilution (Dense (D), Dilute (d))
- Pick your parent A — Agouti (Agouti (A), Non-agouti (a))
- Press Calculate, then read the result alongside the sources listed below
If the result looks wrong, check your inputs before you worry. Entering weight in the wrong unit is easily the most common reason a figure looks off.
For related questions, see the other genetics tools or browse every cat tool.
Before you rely on this
This calculation assumes a healthy adult cat with no complicating conditions. Pregnancy, recovery from illness, medication and significant age at either end of the scale all change what is appropriate. When in doubt, the safest move is to take the number to a vet and ask whether it fits your particular animal.
Sources and references
The formulas, reference ranges and species data behind the Cat Coat Color Genetics Calculator come from these veterinary references, professional bodies and published research.
- vet.cornell.eduCornell Feline Health Centervet.cornell.edu(opens in a new tab)
- PubMed CentralOpen-access biomedical literaturencbi.nlm.nih.gov(opens in a new tab)
- RSPCAAdvice and Welfarerspca.org.uk(opens in a new tab)
- pdsa.org.ukPDSA Pet Health Hubpdsa.org.uk(opens in a new tab)
- Merck Veterinary ManualRoutine Care and Breedingmerckvetmanual.com(opens in a new tab)
- Built on veterinary referencesFormulas and ranges come from veterinary manuals, university research and welfare bodies, listed above for you to check.
- Instant resultsNo page reload, no waiting and no account. Enter your details and the result appears straight away.
- Private by designCalculations run in your browser. Nothing you enter is stored on our servers or shared with anyone.
- Always freeEvery XpertsPet tool is free to use, with no premium tier and nothing to sign up for.