The daddy was a chihuahua/terrior. The mommy acted normal after giving birth. When the pup was two weeks old to the day we found the mom dead after she had seemed fine a few hours before. Now we are raising the baby on puppy formula and I am so heart broken. The mom was only 1 1/2 years old and the puppy was very tiny. Because she acted "normal" for the past couple of weeks I did not even know anything was wrong to take her to the vet. Any information would be deeply appreciated.