How do I diagram this?

Ashley2018-1

I know this is invalid reasoning, but it was one of the most popular incorrect answer choices so I'd like to see it diagrammed
Sarah's dog is not a dachshund, for he hunts very well, and most dachshunds hunt poorly.

SD---> HVW
D--m-- /HVW

C: SD---> /D

nnnnnnzzzz

D --m-- /HVW
HVW

---

/D

ninamatryoshka

You can also visualise this using a Venn diagram.

Big circle for dachshunds, with an area equalling more than half of the circle for hunt poorly (to signify that most dachshunds hunt poorly). You're left with a small space in the circle for dachshunds that don't hunt poorly (they either hunt very well or hunt averagely, you don't know, you just know that they don't hunt poorly).

These are the premises.

Then the separate conclusion is that Sarah's dachshunds must fall in the "hunt poorly" area, when he could as well fall in the not hunt poorly area, you're given no reason to think that he falls in the hunts poorly area other than that he's a dachshunds. This is the flaw, equivocating between most and all.