Commissioner Craig Jennings said veterinary tests on ill puppies taken in last week showed that no other animals are in danger.
Jennings said the puppies originally showed signs of distemper, which spread and infect other animals. The shelter has been closed all week as a precaution. Jennings said the tests showed that the ill puppies were likely exposed to toxins and not infected with any communicable disease.
Jennings said the shelter will resume normal operations Friday, adding that the shelter is "pretty full" with animals available for adoption.