How much does a house mouse cost? What maintenance budget should you expect?


If you want to adopt a house mouse and know how much it will cost you, we give you all the elements to estimate the budget necessary for its purchase and then for its maintenance.

The cost of a mouse depends on where you buy it

First of all, it is important to keep in mind that the mouse is an animal that needs the company of at least one of its kind. Your mice will be same sex or neutered, unless you decide to go into breeding, as mice reproduce quickly and very easily. Females behave much more calmly than males who are more territorial. If you choose to accommodate males, you will have to separate the animals frequently due to conflict. In view of this difference in character, female mice are more sought after, but no price difference is observed with males. The price of a mouse basically depends on where you buy it.

Perhaps the first place you think of to buy a mouse is The pet shop. However, this is far from the best option. The animals sold there come from poorly controlled farms. The mice you find there come from intensive breeding. Many young mice are separated from the mother before they are weaned. Suffice to say that you will have great difficulty taming these individuals who, moreover, have a great chance of developing behavioral disorders. In most cases, therefore, weakened animals, susceptible to disease and probably carriers of parasites are offered for sale. No attention being paid to the sex of the animals, the females are mostly pregnant. It will also be difficult for you to make sure that the mice you have decided to buy are of the correct gender. A classic type mouse Mus Musculus will cost you Less than 10 euros, but your choice will be delicate and risky. And given the list of negatives we have just compiled, you will probably have to incur veterinary expenses in the future, despite your efforts to provide a fulfilling environment for your mice.

You can acquire free mouses. These are mainly individuals who have bought pregnant mice in a pet store, without knowing it of course. They therefore have little ones to place. Without experience and without advice, it will also be very difficult for you to assess the state of health of the mice you choose or to determine their sex. But if you are interested anyway, you will find ads posted on personal transaction sites or forums dedicated to house mice. Given the circumstances, never agree to be sold to you, only to be given to you. You can also recover mice through associations collecting abandoned animals. In this case, you may be asked to make a donation.

Finally, there are mouse breeding farms: they are the best solution for acquiring a mouse. For the most common mice with the most common coats, the price of the mouse is around 10 euros. For specimens of a precise color and more difficult to obtain, the price may go up up to 15 or 20 euros.

This price remains quite reasonable and such a purchase also corresponds to an ethical act. Behind these amateur breeders are passionate people, respectful of animals, who master the genetics of colors and have carried out a selection of mice to reproduce specimens free from blemishes.

Adoptions often operate on a reservation system as mice are in demand. If you do not live next to the farm, you will have to move to pick up the animal, or wait for the breeder to come and bring you the animal if possible. Each month spent in breeding after weaning is billed and increases the price of the mouse.

These breeders are people who are not ready to entrust their animals to just anyone. This will probably give you a questionnaire to fill out. If you have not documented yourself beforehand, it forces you to educate yourself and to project yourself into the care you will need to provide to your mice. You also agree to provide news of mice purchased, especially in the event of death and illness, to help breeders keep track of lines. All these steps are really worth it because you will have very healthy mice, of which you will even be able to know the parents.

The different maintenance expenses of a house mouse

The house mouse has the advantage of requiring almost no maintenance. She takes care of her own hygiene. You can consider brushing it regularly – this allows you to maintain regular contact with your small rodent – but not all mice appreciate such an intervention. And there is no point in stressing the animal unnecessarily. Even her claws don’t need to be cut as she will if they get too long on her own.

The cage is one of the main expenses. You will find them at all prices, depending on the materials used and the dimensions. Two elements are to be favored. The first is the size of the cage, which must be spacious enough to allow your animals to exercise, depending on the number of animals accommodated. The second element to focus on is ease of cleaning because you will have to carefully disinfect the cage at least once a week.

Bar cages are the most popular models, but they may need to be lined with wire mesh to prevent breakouts. You will find them from 20 euros, or even a little less. The plexiglass cage is probably a better solution. It is certainly more expensive, but it is closed on the top by wire mesh to ensure sufficient ventilation. It is often sized to accommodate 3 to 4 mice. It prevents drafts (and therefore colds) and breakouts. It is necessary to count around 50 euros for the purchase of the cage.

The cage must be equipped withaccessories, games and other devices that create a course. The more there are, the more the mouse will be able to spend and flourish. Home, wheel, tunnel, hammock … you can let your creativity run free the moment you think about designing elements that do not pose a danger to the mouse, especially because it could get stuck. The price is what you set for yourself, but don’t limit spending too much. It takes around ten euros per accessory (this can of course be much more, depending on the complexity of the object). You may be able to use scraps of salvaged fabric for the nest and make a hammock and cushions yourself.

Bowl and bottle or drinker can be included in the cage, otherwise you have to pay a few dozen euros extra.

The logs and the hay at will will allow the mouse to wear down its teeth. Choose good quality hay, especially not dusty. Because the savings you will realize on this side could turn into health expenses.

For the same reasons, it is also not advisable to save on the litter. Hemp and linen are the most suitable materials to respect the sensitivity of the mouse respiratory system. They are more expensive but well worth it. It is necessary to count a hundred euros per year for this job.

Then come the food expenses. A domestic mouse will be correctly fed with complete pellets adapted for an average budget of 4 to 6 euros per month, that is to say a maximum of 72 euros per year. Consider adding a few fresh vegetables from time to time to supplement your nutritional intake. Treats are not essential because they can quickly unbalance the diet of the mouse if the quantities are poorly controlled.

Even if you take good care of your mouse, you will likely have a few visits to the vet. Prices increase regularly and it is better to make a fairly large estimate of this expense item: count around 50 euros for an annual routine visit. If you want to sterilize your mice, it will cost you a hundred dollars. In addition, some treatments can quickly become expensive. You will no doubt be interested in considering the interest of a mutual health insurance for animals.

In summary

A mouse costs very little to purchase but, proportionally, its maintenance and the equipment necessary for it to live well ultimately prove to be quite expensive:

  • the purchase of the cage and accessories will cost you 150 to 200 euros,
  • annual maintenance (litter, food and hay) is estimated at just over 200 euros per year,
  • health expenses are random and depend on the genetic background of the mouse, your ability to take care of the animal, the level of fees charged by your veterinarian …