Well it depends on a lot of things,the size,health and a lot more mostly because they are Little it is 1-5 pups mostly
How Many Pups Do Chihuahuas Have?
Basically it's depend upon your biche size,diet and main thing should be noticeable that if your biche taking good diet it means that, she will give not more than four to five pups but, if she taking normal diet than it perhaps give birth to pups more than five to six.
First off I don't care if bitch means female dof do not call them that and they can have up to 12 puppies if more your female dog can die