1 Records created or received by an individual, family or organisation (such as a government, cultural association, company or university) during its existence and selected to be kept permanently because they are considered to be of continuing value to society. 2  Unique and irreplaceable.
In domestic dogs, sexual maturity (puberty) occurs between the ages of 6 to 12 months for both males and females, although this can be delayed until up to two years of age for some large breeds. Pregnancy is possible as soon as the first estrus cycle, but breeding is not recommended prior to the second cycle.
Age at breeding. A female cat should be allowed to attain her adult size before breeding. If bred early, she will put her energy into feeding the unborn/newborn kittens instead of finishing her growth. She will be 18-24 months old before she is ready for breeding.A male should be 18 months of age prior to being allowed to breed.This allows time to determine if he is healthy and suitable for breeding.f bred early, she will put her energy into feeding the unborn/newborn kittens instead of finishing her growth. She will be 18-24 months old before she is ready for breeding. A male should be 18 months of age prior to being allowed to breed. This allows time to determine if he is healthy and suitable for breeding.