Pet Wiki

Fuzzy Hairless Mouse

Mus musculus

Also called Fuzzy mouse, Frizzled mouse, Rex (National Mouse Club term)

VarietyShort profile

From A coat variety of the domestic fancy mouse. The AFRMA lists it as the Frizzled coat, also known as Fuzzy, carried by the fz gene.1

At a glance the quick version

Length6 to 8 cm23
Lifespan1.5 to 3 years24
Sizetiny
Soft, velvety feel
Curly whiskers
Comes in any colour or marking
1

Coat and looks how to spot one

Frizzled / fuzzy (fz gene)

Instead of a normal coat, this mouse wears a very short, dense layer of tight curls that sits right down against the skin, giving a velvety, almost bare look. AFRMA likens the feel to the soft side of Velcro. The whiskers are curly too.1

ColoursAny AFRMA-recognised colour or marking1

Personality what they are like

Has the usual fancy mouse personality: lively, inquisitive and quick, best handled gently and low down.4

Daily activity how busy a day looks

Very active, mainly at night and around dawn and dusk. Provide a solid running wheel, tunnels, ropes and things to climb, plus scattered food for foraging.456

Grooming and care the hands-on bits

No brushing required. Spot-clean the cage daily, do a full clean every one to two weeks and check the water every day.56

Home where they are happiest

A secure, well-ventilated cage with dust-free bedding, nesting paper or hay, hides with two exits and climbing items, away from draughts.5

Food basics what goes in the bowl

Complete mouse nuggets as the base, small amounts of fruit and vegetables, and fresh water from a bottle at all times.6

Company who they like around

Needs other mice; keep in a settled single-sex group, ideally of females or of brothers raised together.7

The story where it all began

The AFRMA first accepted this curly, close-cropped coat for its unstandardised class in 2008. It later dropped off the list, came back in 2022 and was made a full standard variety that same year.1

Fun facts for the dinner table

  1. 1

    AFRMA compares the feel of the coat to the soft side of a Velcro strip.1

  2. 2

    The same coat goes by different names on each side of the Atlantic: Frizzled or Fuzzy in the AFRMA, Rex in Britain's National Mouse Club.1

  3. 3

    Even the whiskers are curly on a good show mouse of this variety.1

  4. 4

    It became an official AFRMA standard variety on 31 August 2022, fourteen years after it was first accepted for development.1

Recognised by the official bits

American Fancy Rat and Mouse Association (AFRMA)
Shown as Frizzled (a.k.a. Fuzzy). Accepted as unstandardised on 9 February 2008, dropped in December 2012, reintroduced in January 2022 and standardised on 31 August 2022.1
National Mouse Club (UK)
AFRMA notes that the same coat is called Rex by the National Mouse Club.1

The care rhythm a typical week and year

A typical home-care rhythm for a Fuzzy Hairless Mouse. A starting point, not a vet's advice.

Treats they will love homemade and simple

Hamster and Gerbil Fresh Veggie and Herb Mix

A simple, safe daily supplement that provides essential vitamins, hydration and enrichment for hamsters and gerbils.

You need

  • 1 small piece of carrot (about the size of a pea)
  • 1 small piece of broccoli (about the size of a pea)
  • 1 small piece of cucumber (about the size of a pea)
  • 1 small piece of apple (without seeds, about the size of a pea)
  • 1 small leaf of basil or parsley

How

  1. Wash all fresh ingredients thoroughly.
  2. Cut the carrot, broccoli, cucumber and apple into pieces no larger than a pea.
  3. Tear the herb leaf into tiny pieces.
  4. Mix all ingredients together in a small bowl.
  5. Offer a total of 1.5 to 4.5 teaspoons of this mix per day, depending on the size of your pet.

How much: 1.5 to 4.5 teaspoons per day for hamsters and gerbils

Recipe from Oxbow Animal Health

Rat-Friendly Veggie and Egg Treat

Rats are omnivores and enjoy a varied diet. This treat provides protein and enrichment, and encourages natural foraging behaviour.

You need

  • 1 small slice of carrot (about 1cm thick)
  • 1 small floret of broccoli
  • 1 small slice of cucumber (about 1cm thick)
  • 1 small slice of apple (without seeds, about 1cm thick)
  • 1 small piece of cooked egg (about the size of a pea)

How

  1. Wash all fresh ingredients thoroughly.
  2. Cut carrot, broccoli, cucumber and apple into small pieces (about 1cm cubes).
  3. Cook an egg until hard-boiled, then cool and peel. Take a small piece about the size of a pea.
  4. Mix all ingredients together in a small bowl.
  5. Offer this as part of your rat’s daily food allowance, not in addition to it.

How much: A small amount as part of daily food allowance for rats

Recipe from RSPCA

Small Furries Safe Snack Plate

A selection of safe, low-sugar vegetables and herbs that can be offered as occasional treats to hamsters, gerbils, rats and mice.

You need

  • 1 small piece of carrot (about the size of a pea)
  • 1 small piece of broccoli (about the size of a pea)
  • 1 small piece of cucumber (about the size of a pea)
  • 1 small piece of apple (without seeds, about the size of a pea)
  • 1 small leaf of basil or parsley

How

  1. Wash all fresh ingredients thoroughly.
  2. Cut carrot, broccoli, cucumber and apple into pieces no larger than a pea.
  3. Tear the herb leaf into tiny pieces.
  4. Arrange on a small plate or scatter in the cage for foraging enrichment.
  5. Offer only in small amounts alongside their regular pelleted food.

How much: A small amount as an occasional treat for hamsters, gerbils, rats and mice

Recipe from Burgess Pet Care

Not veterinary advice. Check with your vet first if your pet has allergies, a health condition, is on a special diet or is pregnant. Treats should stay a small part of the daily food. Cut to a safe size and supervise. Terms of use

Owner questions the things everyone asks

How often should I feed my Fuzzy Hairless Mouse?

Feeding frequency varies with age and activity; offer complete mouse nuggets daily and remove uneaten fresh foods after a few hours. Always follow the food label's guidelines and check with your vet for your mouse's specific needs.6 Pet Wiki plan

What should a Fuzzy Hairless Mouse eat, and which foods are dangerous?

Feed a base of complete mouse nuggets plus small amounts of fruit and vegetables, with fresh water from a bottle always available. Avoid dangerous foods like chocolate, caffeine, grapes, raisins, onion, garlic, avocado, and xylitol, see the ASPCA list for full details.68

Should I bathe a Fuzzy Hairless Mouse?

Bathing is not recommended as it can stress your mouse and strip natural oils. If your mouse gets dirty, spot-clean with a damp cloth and consult your vet for advice.

Does a Fuzzy Hairless Mouse need brushing?

No brushing is needed for this breed; their short, curly coat is very low maintenance. Focus on daily cage spot-cleaning and a full clean every one to two weeks.56 Pet Wiki plan

How do I look after a Fuzzy Hairless Mouse's nails and teeth?

Nail and tooth care varies per mouse; provide chew toys and a solid running wheel to help wear them down naturally. Ask your vet for a check-up and specific trimming advice if needed.

How much space and exercise does a Fuzzy Hairless Mouse need?

Provide a secure, well-ventilated cage with dust-free bedding, hides, tunnels, ropes, and climbing items. They are very active, especially at night, so include a solid running wheel and scatter food for foraging.456

Should a Fuzzy Hairless Mouse live alone or with friends?

They need the company of other mice; keep a settled single-sex group, ideally females or brothers raised together. Never house a mouse alone unless advised by a vet.7

How long does a Fuzzy Hairless Mouse live?

Fuzzy Hairless Mice typically live between 1.5 and 3 years, with proper care and a good diet. Regular vet check-ups help them enjoy a full lifespan.42

Is a Fuzzy Hairless Mouse a good pet for children?

They have a lively, inquisitive nature and are best handled gently and low down, so they can be suitable for older, calm children with adult supervision. Very young children may find them too quick and delicate.4

How do I hold a Fuzzy Hairless Mouse?

Always handle your mouse gently and low down to prevent falls; scoop them up with both hands and let them feel secure. Never grab by the tail, and keep sessions short and calm.4

Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Pet Wiki's own starting care plan. A friendly guide, not a vet's advice.

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Where this comes from

Every fact on this page has a numbered source. Spotted an error? support@petwiki.app.

  1. AFRMA - Mouse coat varieties afrma.orgused for recognition timeline, coat description, gene, whiskers, colours, NMC name
  2. MSD Veterinary Manual - Mice msdvetmanual.comused for general fancy mouse weight, length, lifespan
  3. Fancy mouse - Wikipedia en.wikipedia.orgused for general weight and length
  4. RSPCA - Mice rspca.org.ukused for lifespan, activity, handling
  5. RSPCA - Mice environment rspca.org.ukused for housing, enrichment, cleaning
  6. RSPCA - Mice diet rspca.org.ukused for diet, foraging
  7. RSPCA - Mice company rspca.org.ukused for social needs
  8. ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions

Checked 2026-09-30. Text is written in our own words from these sources.