Where to get a pet mouse: rescue, breeder or pet shop

Where is the best place to get a pet mouse?

A rescue. Mice are among the easiest small pets to find in rescue: the Oxfordshire rescue Crittery says fancy mice are frequently found there, and that male mice in particular stay longest, with many never finding homes. Rescue mice have usually been checked by staff, sexed correctly and grouped with companions, which solves the three biggest problems new owners hit.

If you want a particular colour or coat, or a show-quality line, a good breeder is the next best route. Pet shops come last, not because their mice are bad, but because RSPCA Australia notes that shops often buy from several suppliers, which raises the chance of a sick animal.

Adopting mice from a rescue

Start with the big national charities, then look for small rodent rescues near you. In the UK, the RSPCA's Find a pet search has a "small furries" option, and Wood Green rehomes mice from its centres. Wood Green's fee is £12 for a mouse and £5.50 for each extra one, and that includes neutering a male if needed. It also runs a mixing service, introducing a lone mouse to a new companion at its centre under staff supervision.

Smaller home-run rescues such as Crittery often take in mice from accidental litters. Crittery quarantines every new arrival for at least two weeks for a behaviour check, a pregnancy check and any vet treatment before rehoming. In the US, local humane societies and small-animal rescues rehome mice too; search Petfinder or Adopt-a-Pet for mice in the small and furry category.

Buying pet mice from a breeder

A good breeder knows every mouse's parents, sexes them early and handles them young. In the UK, the National Mouse Club, founded in 1895, is the place to start. It does not share breeders' details with non-members, so join or visit one of its shows, which run through the year. In the US, the American Fancy Rat and Mouse Association (AFRMA) publishes a members' breeders list by state, with the varieties each keeps and whether they ship. AFRMA is clear that it takes no responsibility for listed breeders, so you still need to ask questions.

A breeder is also the way to find particular varieties, such as satins, long-haired mice or curly-coated astrex and rex mice. Our guide to mouse breeds and colours explains them all.

Questions to ask a mouse breeder

• Can I see where the adult mice and the mother live?
• How old are these mice, and when were the males separated?
• Have they been handled every day?
• What health testing and quarantine do you do? AFRMA says breeders should test, especially new stock.
• Have you had breathing problems, lumps or skin trouble in this line?
• How long do your mice usually live?
• Will you take a mouse back if things don't work out?
• Can I bring my own carrier? AFRMA recommends it.

A good breeder will ask you questions too: about your cage, your experience and how many mice you plan to keep. RSPCA Australia says a good seller wants you well informed and prepared, so take that as a good sign.

Buying mice from a pet shop, Petco or PetSmart

Pet shops are the easiest place to buy mice, and the cheapest. PetSmart lists a fancy mouse at $7.99 as of November 2026, and says stock varies by location. We could not confirm a Petco price for the same month, so ring your local store. In the UK, check your nearest shop directly.

The risks are health and sex. Shop mice may come from several suppliers, and young mice of both sexes are easy to mix up. Mice mature at 6 to 8 weeks and pregnancy lasts only 19 to 21 days, according to the MSD Veterinary Manual, so one mistake can mean a surprise litter three weeks after you get home. If you buy from a shop:

1. Go in the evening. The MSD Veterinary Manual points out that mice are nocturnal, so you will see who is active and bright.
2. Ask how the mice are housed. Males and females should be in separate tanks well before 6 weeks old.
3. Check the sex yourself. The National Mouse Club explains that a male's anus and genitals sit further apart, while a female's look almost joined.
4. Look closely at every mouse. Use the healthy-mouse checklist below, and walk away from a tank with any sneezing mice.
5. Buy from the same tank. Mice that already live together are an easier group than strangers.
6. Keep them apart from mice you already have. Quarantine new mice in a separate room for at least two weeks before any introduction.

What does a healthy mouse look like?

Whatever the source, check each mouse before you agree. These signs come from RSPCA Australia and the MSD Veterinary Manual.

• Bright, active and mixing with the other mice
• Smooth, glossy, full coat with no bald patches or matting
• Clear, bright eyes and clean ears
• No discharge from the eyes or nose
• Quiet, easy breathing with no sneezing, wheezing or clicking
• A clean bottom and no diarrhoea in the bedding
• Moves easily, with no limping or stumbling
• Not hunched, and a healthy weight: not bony, not round
• Clean, sweet-smelling housing that isn't overcrowded

Our pet mouse health guide goes further into what is normal and what isn't.

What to avoid when getting a pet mouse

RSPCA Australia lists the red flags plainly, and they apply anywhere in the world.

• Buying sight unseen. Online sales and social media groups can be unreliable and unsafe.
• Pressure. A seller who pushes you to buy out of pity, or quickly, is not putting the mice first.
• Dirty or smelly premises, poor housing or poorly fed animals.
• Signs of inbreeding. RSPCA Australia lists obvious genetic traits such as hairlessness as a possible sign of inbreeding, which can affect health.
• Mice under 5 weeks old, which AFRMA advises against buying.
• A single mouse to live alone. The RSPCA says mice should not live alone unless a vet advises it.
• Wild mice. AFRMA warns that wild rodents can carry parasites and disease harmful to pets and people.

Bringing your new mice home

1. Set up the cage first. Have the cage, deep paper bedding, hides, wheel, food and water ready before you collect the mice. Our cage setup guide shows a layout that works.
2. Bring a small carrier. Line it with paper bedding and a little of their old nest if the seller will give you some.
3. Put them straight in and leave them. Wood Green advises not handling new mice for a day or two so they can settle.
4. Keep the room calm and cool. PDSA gives 18 to 22°C (64 to 72°F) as ideal.
5. Book a vet check. Find a mouse-savvy or exotics vet now, while the mice are well.
6. Start gentle handling. After a few days, begin with treats from an open hand. Our guide to taming a pet mouse takes it step by step.

For budgeting, see how much a pet mouse costs, and for the whole picture, our full pet mouse care guide.