Question: what animals are like ferrets?
Answer: The weasel.
The stoat.
The Irish stoat.
The pine marten.
The polecat.
The polecat-ferret.
Feral ferrets can range in colour from pure albino to dark animals almost indistinguishable from wild polecats, but the overall colour is usually pale and, in particular, the white on the face is more extensive.
The American mink.