STOAT & WEASEL
Mustela erminea & nivalis

PAGE INDEX
1. Lateral view
2. Details

Weasel and stoat skulls can only be reliably separated on size, but the largest male weasels can be larger than the smallest female stoats ! Nevertheless, they are "good species" and their skull lengths rarely overlap in Britain. Any skull less than 42mm overall length is almost certainly a weasel.
1. Weasel skull, lateral view.
Details of Specimens Illustrated
Image 1
Weasel Mustela nivalis
Sex - male
Stage - adult
Date collected - Jan 1995
Area collected - Northumberland
Collection ref. - 95.002
Source - trapped
Measurements
Condylobasal length40.4mm Zygomatic width23.4mm
Jaw length20.0mm Interorbital width8.9mm
Post-orbital constriction8.9mm

Latin Name : Mustela "a weasel", nivalis "of the snow",erminea from hermine, a French word for a stoat.

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