The phrase "Stoat's Tail" could refer to a few different things, depending on the context. Here are some possibilities:

1. Literal Meaning (Animal Anatomy)

A stoat (Mustela erminea) is a small, agile mammal in the weasel family, known for its slender body and distinctive tail.
The tail is short (about 1/3 of its body length) and has a black tip, which may help distract predators.

2. Folklore & Superstition

In some cultures, weasel or stoat tails were believed to have magical properties (e.g., protection against evil).
There’s an old Irish legend about a "weasel’s tail" being used in curses or charms, though specifics vary.

3. Fishing Lure

Some anglers use fur (including stoat tail hair) to tie fishing flies, as the fine texture mimics small prey.

4. Literary or Artistic Reference

It might be a metaphor or symbol in poetry, songs, or stories (e.g., representing slyness or agility).

5. Mistaken Phrase?

If you meant "Stoat’s Tale", it could imply a story about a stoat (like a fable).

Would you like clarification on one of these, or is there another context you’re thinking of?