/ Gray Wolves Content for UC Davis en /food/news/novel-study-calculates-cost-cattle-ranchers-expanding-wolf-population UC Davis researchers found that one gray wolf can cause between $69,000 and $162,000 in losses due to lower pregnancy rates in cows and decreased weight gain in calves. April 21, 2025 - 4:16pm Amy M Quinton /food/news/novel-study-calculates-cost-cattle-ranchers-expanding-wolf-population /climate/news/gray-wolf-personality-research-uses-puzzle-boxes-rain-sticks Novel research out of UC Davis seeks to shed new light on the lives of gray wolves. September 20, 2023 - 9:00am Emily C Dooley /climate/news/gray-wolf-personality-research-uses-puzzle-boxes-rain-sticks