Wallace Roney's cattle approach a fladry enclosure designed to protect them from wolf attacks. Roney recorded the first cattle kill from wolves in California in more than a century. Since implementing the fladry technique, he's had no losses while the heifers are in the corrals. While that is a relief for him, he says the fladry contributes it's own challenges. The cows have to be trained to go into the enclosures. The process is expensive, the fence requires frequent repairs and the cows graze down the grasses, which both degrades the land within the corral and makes it harder for cattle to put on weight.