It`s a weasel.
They are evil little fuckers,, as well
I had one in the house and it went berserk, was trying to kill me and anything that moved.
Strange point though. Would a lurcher, trained to work with ferrets not think twice about killing it ? I imagine my Whippet x would nail it, but maybe my collie x would have a second look.
Not surprised a dog backed off. If they weren`t used to seeing one, a full blown attack would throw them for sure hahaha