Bats are sometimes eaten by owls and snakes. Shrews are our smallest mammals. Despite their size, they are aggressive predators. Shrews have such a high metabolism they must eat constantly. They eat insects, sowbugs and spiders.
Moles eat insects and worms.
A feral animal is a domestic animal which has been released or allowed to go wild. On Mount Diablo we have feral dogs and cats. Feral cats are seen along all roads in the state park. Feral cats compete for food with native wildlife such as weasels, owls, hawks, and snakes. Feral dogs occur in the Wall Ridge and Mitchell Canyon areas.