For your cats to successfully breed they need to meet the following criteria:
- Love at 100%
- Happiness over 75%
- Energy over 25%
- Hunger under 25%
- male and female
- both awake
- within range of each other
- set them to same group as the land (this is VERY important if land is set for group access, scripts, rezzing and object entry only)
- can also try re-rezzing cats next to each other and resetting home
If your cats are having issues breeding, double check the criteria listed above. Often the reason for them not breeding is something simple, like having energy out of sync, or one cat being asleep.
Also keep in mind that partnering a cat is not a guarantee that they will breed. It's only a guarantee that they won't accidentally breed with a cat other than the one they are partnered to, for the duration of the partnership
I hope this information helps!