I like that one. My favorite football team's mascot is the Wolverines.
Pound for pound, that's probably the nastiest mammal on the planet.
There is also the Tasmanian devil:
pibbuR who notices that there is a book on amazon about Wolverine vs Devil (https://www.amazon.com/Wolverine-VS-Tasmanian-Devil-Would/dp/0545451892).
PS. Lots of references on the subject fpund on Google, actually. The general opinion is that the Wolverine would be the winner, given the size difference. DS.
PPS. Regardiong sizes: There's also the description of gnomes in Terry Pratchett's Discworld. They're not more angry than other species, but all that anger is consentrated in a very smal body (10 cm). DS.