Central Regional General Manager Ros Alsford said the puppies were abandoned with nothing but each other for warmth, and it was "heartbreaking to see innocent and vulnerable animals being dumped when there were other options available."
"We understand that people's circumstances can change, and that unwanted litters can force people into a situation where they genuinely can't care for their animals anymore. We just want our community to know that there is always another option, and we can help."
The puppies were taken in by the SPCA Wellington Centre and were now rehydrated, eating well and have since gone into foster care.
Alsford said they wanted to find out more information about where the puppies were from, so they could help and prevent a similar situation from happening again.
Anyone with information could call SPCA Wellington Centre on 04 389 8044, and it would be treated as confidential.