Usually cat mother can contain kittens as much as 2-5 tail. They are born after a pregnancy that lasts between 64 and 67 days, with an average of 66 days, in the amniotic sac that is bitten and eaten by the mother after birth.
During the first few weeks, kittens can not urinate and defecate without being stimulated by their mother. They also have not been able to regulate their body temperature for the first three weeks, so kittens born at temperatures less than 27 ° C (81 ° F) may die from hypothermia if not constantly warmed by the mother.
Breast milk is very important for the nutrition and growth of kittens. Through this milk the antibodies are transferred to the kitten, which helps protect them against infectious diseases. Newborn kittens also have not been able to produce concentrated urine so it needs a very high fluid intake.
Kittens will open their eyes when they are seven to ten days old, but their views are still blurry. They have not been able to see clearly until they are about ten weeks after birth.
Kittens develop very quickly when they are about two weeks old until the seventh week. Their coordination and strength began to increase, besides they began to play and quarrel with their brothers and sisters, and began to explore the world outside the "nest". They started learning to lick their own fur and other relatives and play hunting and spying, and this showed their innate abilities as predators. Innate skills are developed by other mothers or cats by bringing live prey to the nest. Later, the adult cat also shows hunting techniques for her kittens to imitate her.
As they reach the age of three to four weeks, the kittens gradually begin to be separated by their mothers and begin to eat solid foods. The separation process will usually be completed by six to eight weeks. Kittens usually begin to lose their baby's teeth around 3 months of age, and begin to have full adult teeth when they are 9 months old. The kittens will start eating solid foods when they are finished separated by their mothers, but usually they are still continuously breastfeeding their mothers to be separated from their mothers. Some cat mothers will separate their kittens as early as possible by the age of 3 months, while some other cat mothers separate them when their kittens approach sexual maturity.
The sex of a kitten can usually be easily determined when they are new born. Cats six to eight weeks old will be more difficult to have sex because of the growth of fur in the genital area. The male cat opening urethra is round, while the female cat's opening urethra is the outline. Another difference is marked by the distance between the anus and the opening urethra, which is larger than males.
Kittens are very social animals and spend most of their time playing, hunting, and interacting with other animals. Kittens begin active in play when they are three to four months old, and will be more active when they are about five months old. Kittens are susceptible to accidents because they often look for dark places to hide, and if they are not supervised then sometimes things will be fatal to them.
While domestic kittens are usually sent from animal shelters to new homes when they are six to eight weeks old, it is recommended that the kitten should be accompanied by a 6-12 week old cat and other kitten as this is essential for social development and their behavior. Usually, cat breeders will not sell kittens younger than twelve weeks of age, and in many jurisdictions, giving kittens younger than eight weeks is illegal.
The average cat reaches his sexual maturity when he is about seven months old. Many assume that cats that are really "adults" are when they are about one year old, and usually cat products labeled "cats" are for cats that are one year old.