Nine puppies dumped in duct-taped bag at northern San Diego County park

Somebody stuffed nine puppies into a dog-food bag, duct-taped it and abandoned it at an Escondido park this week, and authorities want to know who did it.

The puppies are Shar-Pei/Labrador retriever mixes roughly 10 to 14 days old, according to the San Diego Humane Society.

A pair of good Samaritans…