Do you agree with the sale of dogs? It´s a debatable topic. First We have to know, what´s a dog? Citing the Theory of Evolution, a dog is a domestic animal descendant of Wolf (it´s is indisputable, there are many papers about the topic). Now, what´s a domestic animal? Domestication involves a relationship between humans and animals or plants for our benefit, several examples of benefits: 1) food (raise animals to food: chicken, pig etc) 2) labor (donkey and mules) 3) Secondary products (wool) 4) Hunting (dogs) 5) Pets (Dog and cat). But to get those benefits it has taken a long time; that this, in one day We can´t domestic a feral animal. These processes of domestication involve an alteration in morphologic and behavioral. For example, many dog chihuahuas are not going to hunt how a pack of wolves. However, the dog chihuahua and wolves can have offspring [artificial insemination]. For this reason, the dog chihuahuas [dog breed] would be extinct in the natural environment without our help.

So, many dog breed depends on us, We can adopt or buy... which is the correct? I think if that to buy dogs is not bad if these dogs are well cared by their vendors. A good alimentation, vaccines, the female isn´t exploited to give birth, control over the dog population and love for them. Furthermore, who breed better the dog pet? who buy or who adopt? It´s to think.