Life in proportion

Brown rat vs Mouse

What are they, and what does the difference actually look like?

Two things. One honest scale.

Meet the pair

What these two things are

Brown rat

A brown rat is a medium-sized rodent that adapts easily to urban and rural environments.

25 cmBody length

Mouse

A mouse is a small rodent with a pointed snout and a long, thin tail.

9 cmBody length

Brown rat has about 2.78 times the body length of Mouse.

True scale
01
Brown rat25 cmBody length
02
Mouse9 cmBody length
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
Measurements, assumptions & sources +

Brown rat

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.

Mouse

Defined example; real examples vary. The 25 g mass is an explicit assumption, not a species average or product specification.

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.

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Measurement details

Why these numbers?

The visual compares body length with body length. The records below preserve each value’s basis and caveats.

Brown rat

25 cm

Body length · defined specimen

A chosen 25 cm body, excluding tail, and 350 g mass.

Mouse

9 cm

Body length · example

Defined example; real examples vary. The 25 g mass is an explicit assumption, not a species average or product specification.

Comparing
Body length ↔ Body length
Relative size
Brown rat is larger on this measurement by a factor of about 2.78. Brown rat's selected measurement is approximately 178% greater than Mouse's.

How to read the visual

The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.

  • Brown rat: Nose-to-rump reference span; tail excluded. Poses and unmeasured details remain representative.
  • Mouse: Nose-to-rump reference span; tail excluded. Poses and unmeasured details remain representative.

There’s always another scale

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