Least weasel vs Stoat

The stoat is heavier: 119.4 g against 103.9 g for the least weasel, about 15% more.

What is the difference between a least weasel and a stoat?

Each point below is worked out from a pair of recorded values.

The stoat is heavier: 119.4 g against 103.9 g for the least weasel, about 15% more.
The stoat is longer-lived: 11.1 years against 9.55 years for the least weasel, about 17% longer.
Both belong to the genus Mustela, so they are close relatives.
Both are listed as Least Concern on the IUCN Red List.

	Least weasel	Stoat
Scientific name	Mustela nivalis	Mustela erminea
Family	Mustelidae	Mustelidae
Order	Carnivora	Carnivora
Weight	49.8 g – 115 g	110.3 g – 324 g
Length	Not recorded	Not recorded
Lifespan	9.55 years	5 years – 11.1 years
Main food	Not recorded	arvicola amphibius, european hamster, ochotona, poponejo
Habitat	forest	forest, shrubland
Conservation status	Least Concern	Least Concern
Countries recorded	Not recorded	1

A scale drawing needs a recorded length for both animals; only weights are on record for this pair.