The second day of the lunar year is the “Birthday of all Dogs”! According to Chinese custom, all dogs (especially strays) will be well fed on this day.
Source: http://www.nationsonline.org/oneworld/Chinese_Customs/chinese-new-year-festivities.htm
1st day: Birthday of the Chicken
2nd day: Birthday of the Dog
3rd day: Birthday of the Pig
4th day: Birthday of the Sheep
5th day: Birthday of the Ox
6th day: Birthday of the Horse
7th day: Birthday of Men