The first thing you need to take care of making the announcement of the loss of a cat, is to attract the attention of an increasing number of people in order to increase the likelihood of this advertisement the eye of the person who actually saw the pet. It can be done, entitling the ad short and succinct text captures the essence of the problem, for example, "Lost cat!" or "Help to find the cat!". Not worth it in large letters, write the title "Ad" or "Wanted" because these common words are unlikely to cause interest in people and desire to see the entire text of the message.
The main part should be devoted to distinguishing marks of the animal that will help him who could see him, understand that this is the cat you're looking for. Specify here the color of the animal, the color of his eyes, the pancake of wool and size. Especially useful can become special features, if any: for example, if the cat has a torn ear or docked tail. If you have a photograph of the pet, it will also be helpful to place in the ad, is better in color.
Finally, in the concluding part of the text should indicate how to contact the owners of the cat. In such a situation it is preferable to give the mobile phone, which will allow rapid communication and, as a consequence, obtaining relevant information about the location of pet. If you are willing to give a reward to the person who will help find the animal, be sure to include it in the ad: maybe it will for someone who has seen him added incentive to make a call. Also it will be useful to understand reading the ad, how important for you to find a pet: you can emphasize this with a phrase like "We really miss the cat!" or "Call any time of day!".
In order to maximize the number of people who noticed the ad, and increase the probability of finding a pet, you need not only to write a text message, but to place it where the cat could see with maximum probability. If lost your cat often walked alone, try to remember or provide his usual routes and post an ad close to them.
If the cat was home and never went outside, it's worth putting up an ad in neighboring yards, as the frightened animal was unlikely to go far. In addition, it is useful to place ads in places crowded in your area: bus stops, near pharmacies and shops. Finally, it is useful to stick them near veterinary clinics, because the people who do care about their Pets, will understand your loss and will try to help you.
In addition, advertisement can be placed in the local Newspapers or in the running line on local TV. However, please note that in this case the text is likely to have to reduce, therefore, concentrate only on the most important details.