I sold a Canon 600D to a customer who owns a pet grooming establishment today. As we were talking, I told the customer about the loss of a customer's dog (which I kind of elaborated yesterday). True to my intuitions, it was very hard to find a lost dog, especially if its a purebred. He gave the following reasons:
1. If the dog was found in another person's house, the person would've tried to return it to its owner.
2. Purebreds, especially house kept ones are not very good in their sense of direction, having being kept in their owner's house for all their lives. Once they escape, they almost immediately loose their bearings, and wander further and further away from home.
3. There is a market for purebreds as pets to unsuspecting buyers, or more sinisterly as breeding stock (Fortunately the Chinese folk in Malaysia don't find dog meat very appealing). The latter occurrence would be more likely if the dog was female as it could give birth to several generations of pups which are worth a lot in the market.