Little dogs are women’s replacement for babies. Most girls in their twenties own one and many more wish they had one. These little dogs are leading to the dropping birth rates in America; girls who otherwise would have babies, now have miniature dogs.
Women now own small pet dogs at a higher rate than at any other time in history. 60% of Americans own dogs and I think that most of the buyers are women. Anecdotally, only 1 of 50 guys I know owns a dog, whereas about 45 in 50 women owns a small pet dog.
The women I know who have small dogs are much more content being single and not that many of them intend to have children in the immediate future. On the other hand, women without dogs in their mid to late twenties are husband hunting as hard as they possibly can.