The expansion of gray wolf populations is upending California cattle operations, leading to millions of dollars in losses for ...

(Tina Saitone and Ken Tate / UC Davis) Motion-activated field cameras, GPS collars, wolf scat analysis and cattle tail hair samples are helping University of California, Davis, researchers shed new ...

Davis estimates that a single wolf can cost cattle ranchers more than $160,000. “It is clear the scale of conflict between ...