There is at least one weasel species native to every state but Hawaii. The species are; Longtail weasel
Short tail weasel
Least weasel
No
yes weasels live in grasslands
No, there are no weasels in Ireland. There are stoats, which some people mistake for weasels, but there are no actual weasels in Ireland.
The long tailed and short tailed live there.
does least weasels travel in groups
yes
Anywhere
Yes they are, My small dog drug one in just last week. You can type in Weasels in Ohio and read about them. I live in Southeastern Ohio. They are really pretty. We had over 35 chickens killed in one night in our hen house when I was younger by one or a few weasels. They are fast, and hungry.
Long & Short-Hair weasels The Least Weasel
yes
Weasels live in nooks and crannies, holes on trees and under rocks.
Yes, in varying areas of the Island. I've seen a few weasels for myself on the island.