Standard-coat Rat
Rattus norvegicus domestica
Also called Standard rat, Smooth-coated rat, Standard fancy rat
From The original smooth coat of the domestic fancy rat, descended from the wild brown rat; the fancy itself began in England in the 19th century.12
A friendly guide, not veterinary advice. For anything about your pet's health, ask your vet.
At a glance the quick version
General figures for the domestic rat species from the MSD Veterinary Manual; club standards set no separate weight for this coat type, which shares the standard fancy rat body.
Coat and looks how to spot one
Smooth, short, glossy coat (the normal fancy rat coat)
This is the everyday rat coat: short, sleek and lying flat against a long, slightly racy body, with a natural shine and straight whiskers. Bucks tend to have a thicker, rougher-feeling coat, while does have softer, finer fur.2164
Personality what they are like
A smooth-coated fancy rat is typically affectionate, inquisitive and loyal once used to people. Rats raised with gentle daily handling become confident companions that enjoy attention and learn readily.15
Daily activity how busy a day looks
As lively as any fancy rat. Most active around dusk and through the night, it needs daily supervised time out of the cage, things to climb and forage for, and short play or training sessions.57
Grooming and care the hands-on bits
Rats groom themselves and their cagemates thoroughly, so the smooth coat needs no brushing or bathing. Regular cage spot-cleaning and daily handling are all the coat care needed.57
Home where they are happiest
The largest multi-level rat cage you can fit, with shelves, ropes, ladders, hammocks and hideouts, dust-free bedding such as shredded paper, placed in a quiet room around 19-23 C away from direct sun and draughts.73
Food basics what goes in the bowl
A complete rat nugget or pellet as the daily staple, with small portions of vegetables, a little fruit, grains and cooked egg counted into the ration. Keep sugary or fatty bits for training rewards, scatter some food to encourage foraging, and provide fresh water from a bottle at all times.8
Company who they like around
A very sociable animal that should share its home with at least one other rat, in a same-sex pair or small group or a neutered mixed pair, and enjoys daily time with its people.51
The story where it all began
Rat-catchers in 18th and 19th century England began keeping and taming unusually coloured wild brown rats, and the rat fancy was formally born in 1901 when a hooded rat won Best in Show at Aylesbury. Every later coat variety, such as Rex or Satin, is measured against this original smooth coat.1
Fun facts for the dinner table
- 1
The standard coat is the most common coat type among fancy rats.1
- 2
Males and females feel different to stroke: bucks have a coarser, thicker coat and does a softer, finer one.1
- 3
The AFRMA standard asks for a coat with natural shine that covers the body densely.2
- 4
Standard rats have straight whiskers, which helps tell them apart from Rex and Satin babies.6
Recognised by the official bits
- American Fancy Rat and Mouse Association (AFRMA)
- Standard is the first of AFRMA's seven show varieties; the coat should be short, smooth and glossy, dense over the body, with males carrying slightly longer, coarser hair.2
- Rat and Mouse Club of America (RMCA)
- Standard is one of the four RMCA varieties; the coat should be smooth and glossy, with males a little longer and coarser in coat than females.9
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Standard-coat Rat. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- Spot cleanevery day
- Full cleanevery week
- Play timeAt least an hour out of the cageevery day
- Nails checkevery 3 weeks
- Vet check-upevery year
Owner questions the things everyone asks
How often should I feed my Standard-coat Rat?
Feed a complete rat nugget or pellet daily as the staple, plus small portions of vegetables, fruit, grains and cooked egg. Scatter some food to encourage foraging and always provide fresh water from a bottle.8
What should a Standard-coat Rat eat, and which foods are dangerous?
A balanced diet is rat nuggets or pellets with small amounts of veg, fruit, grains and cooked egg. Avoid alcohol, chocolate, caffeine, avocado, citrus, grapes, raisins, onion, garlic, raw meat, raw eggs, bones, xylitol and salty snacks.810
Should I bathe a Standard-coat Rat?
No, rats groom themselves and their cagemates thoroughly, so bathing is not needed. Regular cage spot-cleaning and daily handling keep the coat in good condition.57
Does a Standard-coat Rat need brushing?
No, the smooth short coat needs no brushing. Rats keep themselves clean, so just enjoy daily handling and keep the cage clean.57
How do I look after a Standard-coat Rat's nails and teeth?
Check nails every three weeks and trim if needed, but ask a vet or good breeder for guidance. Provide wooden chews and hard food to help wear teeth naturally.8 Furry Diary plan
How much space and exercise does a Standard-coat Rat need?
Provide the largest multi-level cage you can fit, with shelves, ropes, ladders, hammocks and hideouts. Give at least an hour of supervised out-of-cage time daily for climbing, foraging and play.73 Furry Diary plan
Should a Standard-coat Rat live alone or with friends?
Rats are very sociable and should live with at least one other rat in a same-sex pair or small group, or a neutered mixed pair. They also enjoy daily time with their people.51
How long does a Standard-coat Rat live?
The typical lifespan is 1.5 to 3 years, though some may live longer with good care. Ask your vet for advice on keeping your rat healthy.53
Is a Standard-coat Rat a good pet for children?
With gentle daily handling, they become affectionate and loyal companions. They are best for older children who can handle them calmly and supervise playtime.15
How do I hold a Standard-coat Rat?
Support the rat's body with both hands, one under the chest and one under the hindquarters, and let it feel secure. Always handle gently and never grab the tail.5
Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Furry Diary's own starting care plan. A friendly guide, not a vet's advice.
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Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at support@furrydiary.app and we will fix it.
- Fancy rat - Wikipedia en.wikipedia.orgused for origin, history, coat by sex, temperament, fun facts
- AFRMA Fancy Rats - Varieties afrma.orgused for recognition, coat description, colours
- MSD Veterinary Manual - Description and Physical Characteristics of Rats msdvetmanual.comused for weight, lifespan
- AFRMA Rat Standards afrma.orgused for recognition, body type, body length
- RSPCA - Rats rspca.org.ukused for lifespan, temperament, social needs
- AFRMA - Rat whiskers comparison afrma.orgused for straight whiskers
- RSPCA - Rat environment rspca.org.ukused for housing, temperature, enrichment
- RSPCA - Rat diet rspca.org.ukused for diet basics
- RMCA Rat Standards rmca.orgused for recognition
- ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions
- VCA Animal Hospitals: Feeding times and frequency for your dog vcahospitals.comused for owner questions
- ASPCA: Dog grooming tips aspca.orgused for owner questions
- ASPCA: Cat grooming tips aspca.orgused for owner questions
- RSPCA: What to feed your rabbit rspca.org.ukused for owner questions
Checked 2026-09-30. Text is written in our own words from these sources.