--- title: Wolves Livestock: Killing Predator Leads To More Livestock Deaths description: Killing wolves that prey on sheep and cattles leads to the death of more livestock canonical: https://time.com/3620141/killing-wolves-hurts-livestock/ author: Justin Worland article:opinion: false article:content_tier: free article:published_time: 2014-12-05T16:06:00.000Z article:modified_time: 2026-02-22T02:36:41.380Z article:section: Science og:title: Wolves Livestock: Killing Predator Leads To More Livestock Deaths og:description: Killing wolves that prey on sheep and cattles leads to the death of more livestock og:url: https://time.com/3620141/killing-wolves-hurts-livestock/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt3979b80a59857984/69876cfb2dce0191249dc3cf/wolf.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2560 og:image:height: 1440 og:image:alt: Wolf og:type: article twitter:card: summary_large_image twitter:title: Wolves Livestock: Killing Predator Leads To More Livestock Deaths twitter:description: Killing wolves that prey on sheep and cattles leads to the death of more livestock twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt3979b80a59857984/69876cfb2dce0191249dc3cf/wolf.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Killing Wolves Increases Cattle and Sheep Deaths, Study Finds > Sponsored content. 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Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-network-2026q3/newsletters?i=76deeac5-abde-4c47-8940-86684ad65410&cr=time-nl-network-2026q3-v1)  by [Justin Worland](https://time.com/author/justin-worland/)  ## Justin Worland Senior Correspondent Dec 5, 2014 4:06 PM UTC  European wolf (Canis lupus lupus) in the wild European wolf (Canis lupus lupus) in the wild Getty Images  by [Justin Worland](https://time.com/author/justin-worland/)  ## Justin Worland Senior Correspondent Dec 5, 2014 4:06 PM UTC Killing wolves that prey on sheep and cattle leads to the death of more livestock, according to a new [study](http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0113505#pone.0113505-Wielgus1)_._ Prior to the Washington State University study, the practice of culling wolves to save livestock had been a “widely accepted, but untested, hypothesis,” according to the authors. But it may be that killing wolves disrupts wolf packs in a way that leads them to hunt for livestock, which are relatively stationary, rather than the more mobile deer and elk. “The odds of livestock depredations increased 4% for sheep and 5–6% for cattle with increased wolf control,” the study found. The study, which looks at 25 years of government data, found that killing wolves only helps protect livestock after 25% of a wolf population has been killed. But regulations designed to protect wildlife make it unfeasible to kill that many of the animal. “The only way you’re going to completely eliminate livestock depredations is to get rid of all the wolves,” said study author Rob Wielgus, a Washington State University wildlife biologist. “Society has told us that that’s not going to happen.” ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3620141/killing-wolves-hurts-livestock/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3620141/killing-wolves-hurts-livestock/"},"headline":"Killing Wolves Increases Cattle and Sheep Deaths, Study Finds","datePublished":"2014-12-05T16:06:00.000Z","dateModified":"2026-02-22T02:36:41.380Z","description":"Increased wolf control meant more dead livestock, study found","url":"https://time.com/3620141/killing-wolves-hurts-livestock/","keywords":["animals","hunting","Farming"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt3979b80a59857984/69876cfb2dce0191249dc3cf/wolf.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Justin Worland","jobTitle":"Senior Correspondent","url":"https://time.com/author/justin-worland/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt3979b80a59857984/69876cfb2dce0191249dc3cf/wolf.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Wolf","caption":"Wolf","creditText":"Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/animals/","name":"animals"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3620141/killing-wolves-hurts-livestock/","name":"Killing Wolves Increases Cattle and Sheep Deaths, Study Finds"}}]}] ```