Neutering And Contraception Methods For Ferrets – Sterilization, Castration & Alternatives


  • As a rule, ferrets come into the satchel for the first time between the ages of 8-10 months.
  • In the male , the testicles descend and swell significantly. It develops a pungent smell and begins to mark its territory. They begin to mount conspecifics, both male and female, and start merciless attempts at copulation. The male becomes more aggressive and his coat more greasy.
  • The female’s teats turn a little red and then the vulva (vagina) begins to swell. This can usually be the size of a cherry and secretes a clear secretion. The female dog becomes restless and can also give off an unpleasant smell.
  • The hormonal balance of both sexes is changing. Then there is some spinning, especially with the males.

Sterilization – castration

Sterilization: according to the definition, sterilization is the severing of the fallopian tubes in females or the vas deferens in males. Both males and females can be sterilized.

Castration: the medical removal of the ovaries/uterus or testicles.

The following applies to both males and females: CASTRATION! This is the only way to prevent the rancor from recurring.

But be careful: males are still fertile up to 8 weeks AFTER the castration!

It is therefore always necessary to separate them from still uncastrated females or to castrate the females immediately. The castration of heifers is effective immediately, as there is no more ovaries/uterus.

The satchel begins normally in the female, the estrogen level rises. If the female is not mated, it is not uncommon for permanent rage, that is, the estrogen does not decrease, but continues to increase. The female can no longer get out of the sack. Here one speaks of hyperestrogenism, an increased estrogen level or just the constant rage. If this disease is not recognized early enough, the spinal cord will be damaged and the female will die a slow and gruesome death. The female, who used to be so pretty, loses her fur, becomes emaciated and weak.

Are there alternatives to castration?

There are already alternatives to castration. One reads again and again that owners do not want to castrate their males/males in order to spare them this stress or to use them later for breeding.

In “chemical castration” the male/male is given a hormone chip that has to be renewed over time. The hormone chip lasts for about 2 to 2 1/2 years. This alternative can cost up to 100 euros per chip.

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