i have a 6 week old puppie chawawa, she was ataced by a biger chawawashe ran into a corner and hit her head a not showed up and thin it started to drane 3 days later, she seems ok, but im worried about infection, how should i treat it?
Definitely follow ginger's advice! Chihuahua pups often retain open fontanelle's ("soft spots") in the skull for many months. Her injuries (from the bigger dog andn from the head trauma) should be checked out soon.
This is also a good time to get her started on her routine vaccinations and dewormings.