Coyote mating season in California peaks from late February through early March. Coyotes take the dating game very seriously. They will cover a lot of territory to find the right match. That territory may well include your neighborhood.
The most important precaution you can take to keep your dog safe? Spay or neuter! Coyotes are attracted to and can mate with unspayed or unneutered domestic dogs. Unspayed female dogs in season can attract male coyotes.
Be aware of wildlife in your area, and your pets will be safer because of it.