Haeratchins live together in packs where the female is at the top of the hierarchy. Mating can take place at any time of the year, and there is surprisingly little fighting among males for a female in season. Usually, a male tries to impress a female and if she is interested, then she'll accept; if not, then she'll ignore him. Gestation lasts about three months, and the usual litter size is two.
The mating season starts when winter does. Several males may fight for an unmated female, but once bonded, a male and female ratchin may stay together for life, both helping in the rearing of the young. Three to five cubs are born after a gestation of three months, in the beginning of spring. Parent ratchins are fiercely territorial and protective of their young, sometimes attacking creatures up to twice their size.
Mating can take place at any time of the year. The dominant male in an area has rights to all females whose territories overlap his. After a gestation of eighty days, the female gives birth to two or three cubs, whom she alone rears for the next two years.
During the autumn months, yaergden are busy fattening up for their long winter sleep. Mating also takes place in autumn. Yaergden are polygamous, with females usually picking the older and more experienced males to mate with. In the winter in the seclusion of her den, after a gestation of four months, the female gives birth to two or three cubs, whom she alone rears for the next two years.
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