Yvonne (cow) of Zangberg and Stefanskirchen. After her escape, Yvonne was bought by animal-rights activist Michael Aufhauser, who intended to capture her and transport her to his animal sanctuary, "Gut Aiderbichl", a former farm in Deggendorf, Bavaria. Multiple techniques were used to find her and draw her out of hiding. Searchers used infrared cameras, a helicopter, and used other cows as lures, which consequentially also escaped and are being lured with additional cattle. As all attempts to capture Yvonne failed, the cow received increasing attention from the mass media in Germany and Austria and later all over the world. "Bild" tabloid offered
Yvonne (cow) a reward of ten thousand euros for her recovery. Yvonne could be located but not captured because animal-rights activists and police feared that any approach could drive her out of the area and onto streets. Yvonne's first owner reports that Yvonne has a very nervous character. The campaign to save Yvonne from the hunter's bullet was successful when the order to shoot on sight was rescinded permanently on 28 August 2011. It was decided to ask all helpers to leave the area, with a single hunter remaining to try to tranquilize Yvonne if possible. She would then be moved to