There are quite a few things that you can do which may help you find your pet more quickly:
Even though it is a distressing time, it is important to try not to panic. Take a few minutes to double check any usual places your pet could be hiding - you would be surpised how many calls PETtrac receive from pet owners reporting their pets missing only to find them 5 minutes later in the shed or under a bed.
Make sure that the contact details are correct on your pet's MicroChip, and report your pet missing to the microchip database.
Notify your local dog/animal warden that your pet is missing.