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Pseudopregnancy occurs when a female cat ovulates but is not fertilised due to breeding with an infertile male, spontaneous ovulation or due to the owner stimulating ovulation. The corpus luteum is present after ovulation and persists for around 37 days. The length of pseudopregnancy varies greatly with the mean duration being 41 days.
Without ovulation, she may enter interestrus, which is the combined stages of diestrus and anestrus, before reentering estrus. With the induction of ovulation, the female becomes pregnant or undergoes a non-pregnant luteal phase, also known as pseudopregnancy. Cats are polyestrous but experience a seasonal anestrus in autumn and late winter. [19]
In the Diagnostic and Statistical Manual of Mental Disorders (), false pregnancy is a somatic symptom disorder; it is listed as "not elsewhere classified", meaning it is in a category by itself, different from other somatic symptom disorders such as functional neurological symptom disorder (formerly known as conversion disorders). [2]
However, by contradiction, some spontaneously ovulating species can occasionally undergo mating-induced preovulatory LH surges. Species in which the females are induced ovulators include cats, rabbits, ferrets, and camels. [5] In 1985, Chen et al., used Bactrian camels to investigate the factor(s) that induce ovulation during breeding season ...
For example, a cat's gestation normally takes 58–65 days while an elephant's takes nearly 2 years (21 months). [3] However, growth does not necessarily determine the length of gestation for all species, especially for those with a breeding season. Species that use a breeding season usually give birth during a specific time of year when food ...
High-dose estrogen therapy (HDE) is a type of hormone therapy in which high doses of estrogens are given. [1] When given in combination with a high dose of progestogen, it has been referred to as pseudopregnancy.
The Egyptian Mau is the fastest of the domestic cats, [12] with its longer hind legs, and unique flap of skin extending from the flank to the back knee, which assists in running by allowing the legs to stretch back farther, providing for greater agility and length of stride. Maus have been clocked running more than 48 km/h (30 mph).
Cats with the homozygous genotype (MM) die before birth, and stillborn kittens show gross abnormalities of the central nervous system. [3] Cats with the heterozygous genotype (Mm) show severely shortened tail length, ranging from taillessness to a partial, stumpy tail. [3] Some Manx cats die before 12 months old and exhibit skeletal and organ ...