I can't believe what this poor little girl has been through!! You are such a good owner.... I could see how that could have been easily missed considering their hair can be so good at masking things like that....Do you have many snakes in your area....Poor baby? Is there any way she could have gotten into a fight with another animal?? Thank goodness the wound wasn't full of pus it could have taken your baby a much longer time to recover. Best wishes to your little girl and the hope recovery should be right around the corner!!!