Lady dog in the XVI century served as a means against fleas
Tradition of wearing women's dogs appeared in the XVI century as a method of getting rid of fleas. The body temperature of pawls is higher than that of man, that attracted all the fleas from ladies' hairstyles and from folds luxury dresses.
The smaller dog, the higher is its temperature of body and the more it attracts the hungry fleas. Of course, nobody had not thought about difference in body temperature, but fashion for pawls survived. Now well known that temperature of - one of main targets in bloodsucking insects. As for mosquitoes, of two people, they will choose one that radiates more heat. Such a person has over capillaries extended or they are located closer to body surface. In this case, insect will be easier to get drunk. By the same principle mosquito selects "sweet" spot on your body.