Firefighters were battling a three-alarm blaze at the Animal Kingdom, a zoo in Bordentown.
Firefighters responded to a call at Animal Kingdom about 8:40 p.m. A building which houses puppies and other domestic animals was reported to be on fire. No exotic animals or endangered species were kept in the building, police said.
Animals were evacuated.
The zoo houses animals including monkeys, camels and giraffes, according to the zoo's website.
A veterinarian was later called to the scene.