
Brown rat
A brown rat is a medium-sized rodent that adapts easily to urban and rural environments.
25 cmBody lengthLife in proportion
What are they, and what does the difference actually look like?
Two things. One honest scale.
Meet the pair

A brown rat is a medium-sized rodent that adapts easily to urban and rural environments.
25 cmBody length
A mouse is a small rodent with a pointed snout and a long, thin tail.
9 cmBody lengthBrown rat has about 2.78 times the body length of Mouse.
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.
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.
Change the comparison
Measurement details
The visual compares body length with body length. The records below preserve each value’s basis and caveats.
Body length · defined specimen
A chosen 25 cm body, excluding tail, and 350 g mass.
Body length · example
Defined example; real examples vary. The 25 g mass is an explicit assumption, not a species average or product specification.
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
There’s always another scale
Side by side







