All we know about famous space dogs. Belka, Strelka and many others. But why do the scientists choose these usual dog breeds? Why they didn't choose for example, some toy dog breeds? And what was the dog food basics for those first astronauts? Perhaps, it also was some low protein dog food or something like that. And why dogs were the first animals in space? Why we didn't choose cats or for example, parrots? Read more about dog breeds - things to consider and learn more.