Brown rat
A brown rat is a medium-sized rodent that adapts easily to urban and rural environments.
How big is it?
25 cm long
Also 9.843 in
Body length · defined specimen
A little perspective
Brown rat vs Axolotl: length comparison
The body length of a brown rat is approximately equal to the total length of an axolotl.
A brown rat is a medium-sized rodent that adapts easily to urban and rural environments.
An axolotl is an aquatic salamander from Mexico that retains its larval features and external gills throughout its life.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Brown rat
Body length: 25 cm; defined specimen.
A chosen 25 cm body, excluding tail, and 350 g mass.
Nose-to-rump reference span; tail excluded. Poses and unmeasured details remain representative.
Defined examples — our methodology
The marked body length is calibrated. Unmeasured illustration details are representative.
Axolotl
Representative total length: 25 cm; representative; range 15 cm–30 cm.
A representative adult axolotl 25 cm long and 200 g. Captive adults vary substantially; external gills and the complete tail are included.
San Diego Zoo Wildlife Alliance — Axolotl
The marked representative total length is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 25 cm
We compare the body length of a brown rat. This is an illustrative comparison value, not a claim that every example is the same.
A chosen 25 cm body, excluding tail, and 350 g mass.
Nose-to-rump reference span; tail excluded. Poses and unmeasured details remain representative.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 25 cm | Not recorded | defined specimen | |
| 350 g | Not recorded | defined specimen |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueLiving thingsSea hare20 cmDefined body lengthA sea hare is a soft-bodied marine mollusc related to sea slugs, capable of releasing ink when threatened.
Around the same scaleLiving thingsAxolotl25 cmRepresentative total lengthAn axolotl is an aquatic salamander from Mexico that retains its larval features and external gills throughout its life.
Nearest higher valueLiving thingsDumbo octopus30 cmDefined arm-tip-to-fin-tip lengthThe dumbo octopus is a deep-sea animal belonging to the genus Grimpoteuthis, recognised for its webbed arms and distinctive ear-like fins used for swimming.Sources and method
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The source records and measurement method remain available for inspection.
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
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