Mountain lions captured in San Francisco had diets consisting of 50% pets.

The finding

What the evidence shows

The 50 percent figure appears to come from a California Department of Fish and Wildlife check of stomach contents from 83 mountain lions killed statewide under depredation permits, about 52 percent of which had eaten pets or other domestic animals. That means half those lions had pet remains, not that pets made up half their diet, and they were not lions captured in San Francisco. A Bay Area GPS study found that 75.7 percent of identified prey items were black-tailed deer, matching the site's earlier ruling on the same claim. A Bay Area diet study showing pets make up about half of what mountain lions eat would make this verdict wrong.