I like that much better than the roadkill deer ass the prop guys used for bait. ;)

It can be hard to see in the movie, but many of the Ewok warriors had knives on their belts. In the ROTJ novel, even Wicket is described as having one.

Lucasfilm actually had some '90's Topps trading card artwork changed, to remove a knife held by an Ewok fighting a stormtrooper.

Given Lucas' early involvement with Apocalypse Now, the Ewoks could be considered a version of the natives in that film. Which makes Threepio Col. Kurtz? ;)

The fanfilm "The Invisible Enemy" is as close to vicious Ewoks as we're likely to get.