Mice and rats belong to the order Rodentia and the family Muridae—the largest mammal family on Earth.
Globally, there are over 700 species of true mice and rats, living in forests, deserts, cities, mountains, farms, and even remote islands.
To make this massive list easier to understand, scientists divide mice into major groups, each with dozens of species inside it.
Below is a detailed breakdown.
⭐ 1. House Mice (Genus: Mus)
These are the species most closely associated with human homes and buildings.
✔ 1.1. Common House Mouse – Mus musculus
The world’s most widespread mouse.
Key features:
- 7–10 cm body length
- Grey/brown coat
- Lives inside buildings, farms, cities, and rural villages
- Fast breeder (up to 10 litters per year)
These mice are adaptable and live almost anywhere humans live.
✔ 1.2. Western Mediterranean Mouse – Mus spretus
Found in Spain, Portugal, and parts of North Africa.
Special traits:
- Faster, more aggressive than Mus musculus
- Avoids urban areas, prefers rural fields
✔ 1.3. Asian House Mouse – Mus castaneus
Common across Southeast Asia including Malaysia, Indonesia, and Thailand.
⭐ 2. Rats (Genus: Rattus)
These are larger relatives of the house mouse. Many of them are known as pests in cities and farms.
✔ 2.1. Norway Rat / Brown Rat – Rattus norvegicus
One of the most famous and feared rats.
Special traits:
- Excellent swimmer
- Prefers sewers, drains, basements
- Strong, aggressive, and highly intelligent
Found on every continent except Antarctica.
✔ 2.2. Black Rat / Roof Rat – Rattus rattus
Slimmer body with longer tail.
Habits:
- Prefers roofs and high places
- Found in warehouses, ships, and attics
- Carrier of the historic Black Plague in Europe
✔ 2.3. Asian Rat – Rattus tanezumi
Common in Southeast Asia; often confused with the Black Rat.
✔ 2.4. Ricefield Rat – Rattus argentiventer
Very common in paddy fields of Malaysia and Indonesia.
Known for: destroying crops.
⭐ 3. Forest Mice (Genus: Apodemus, Leopoldamys, etc.)
These mice thrive in forests—from tropical jungles to temperate woodlands.
✔ 3.1. Wood Mouse – Apodemus sylvaticus
Found across Europe and Western Asia.
Traits:
- Lives under leaves, logs, and tree roots
- Excellent climber
✔ 3.2. Japanese Woodland Mouse – Apodemus speciosus
Known for long back legs and jumping abilities.
✔ 3.3. Long-tailed Giant Rat – Leopoldamys sabanus
Found in Malaysia, Borneo, and Southeast Asia.
Traits:
- Larger than typical mice
- Thick fur
- Lives deep in tropical rainforest
⭐ 4. Field Mice (Various Genera)
These species live mostly in grasslands, open fields, and farmlands.
✔ 4.1. Striped Field Mouse – Apodemus agrarius
Identified by a distinctive black stripe running down its back.
Found across Europe and Asia.
✔ 4.2. Multimammate Mouse – Mastomys natalensis
Common in Africa; highly fertile and widespread.
⭐ 5. Voles (Family: Cricetidae)
Voles look like small mice but with a shorter tail and rounder body.
✔ 5.1. Meadow Vole – Microtus pennsylvanicus
Common across North America.
✔ 5.2. Water Vole – Arvicola amphibius
Great swimmer, lives near rivers, streams, and canals.
⭐ 6. Jerboas – The “Jumping Desert Mice” (Family: Dipodidae)
These are desert mice with long legs like tiny kangaroos.
✔ Examples:
- Jaculus jaculus (Lesser Egyptian Jerboa)
- Euchoreutes naso (Long-eared Jerboa)
Traits:
- Can leap several feet
- Live in North African and Asian deserts
- Nocturnal and extremely fast
⭐ 7. Dormice – The “Sleeping Mice” (Family: Gliridae)
Famous for long hibernation periods.
✔ Examples:
- Hazel Dormouse (Muscardinus avellanarius)
- Garden Dormouse (Eliomys quercinus)
Traits:
- Can hibernate for 6 months
- Cute appearance, large eyes
- Lives in trees, bushes, and hedges
⭐ 8. Woodrats / Packrats (Genus: Neotoma)
Native to North America.
Unique behaviour:
They collect shiny objects (bottle caps, coins, metal pieces) and bring them to their nests—hence the name packrat.
⭐ 9. Spiny Mice (Genus: Acomys)
Found in Africa and the Middle East.
Traits:
- Fur contains stiff, spine-like hairs
- Highly resistant to injury
- Skin can regenerate quickly
These species are important in medical research due to their healing ability.
⭐ 10. Exotic & Rare Mouse Species
A few unique species that are less known but fascinating.
✔ 10.1. African Pygmy Mouse – Mus minutoides
One of the smallest mice on Earth (as tiny as 3 cm).
✔ 10.2. Shrew Rat (Genus: Rhynchomys)
Long snout, insect-eating, lives in the high mountains of the Philippines.
✔ 10.3. Cloud Rats (Genus: Phloeomys, Crateromys)
Large, fluffy, tree-dwelling “giant mice” from the Philippines.
🧠 Why So Many Species?
Mice and rats evolve quickly because:
- They reproduce extremely fast
- They adapt to new environments easily
- They can eat almost anything
- They survive in harsh climates
This is why they can live in:
✔ deserts
✔ snow-covered mountains
✔ rainforests
✔ cities
✔ remote islands
📝 Final Summary (Easy to Remember)
The world’s mice and rats can be grouped into 10 major categories:
- House Mice
- Urban Rats
- Forest Mice
- Field Mice
- Voles
- Jerboas
- Dormice
- Woodrats
- Spiny Mice
- Rare/Exotic Species
Each group contains species with different appearances, habitats, and behaviours.