One clip names both of them

3,924 views between them.

Stoat outweighs Least weasel 2.2× — 0.1 kg against 0 kg.

Tale of the tape

Body mass

0.05 kg

🦡 Least weasel · COMBINE

0.11 kg

🦡 Stoat · COMBINE

Body length

0.26 m

🦡 Least weasel · COMBINE

0.27 m

🦡 Stoat · COMBINE

Maximum lifespan

9.99 yr

🦡 Least weasel · COMBINE

12 yr

🦡 Stoat · COMBINE

Bars are sized against the larger of the two figures.

Animals caught on camera

Real footage of the animals on this site — hunting, fighting, and getting on with it.

Shared ancestry

The closest group they share is Mustelidae (family), home to 106 species.

They last shared an ancestor about 4.3 million years ago.

Estimates range from 3.1 to 4.9 million years; the figure above is the middle estimate.

About this estimate

Dates from Upham, Esselstyn & Jetz 2019, PLoS Biology 17:e3000494 (CC0).