AURORA, Colo. (CBS4) – Aurora firefighters were given a box of four abandoned puppies Tuesday morning. Rescue technician Jason Kester was just starting his shift when a woman knocked on the door of Aurora Fire Station 4 saying she found a litter of puppies in a box.

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“We got them out of the trunk. They were filthy. They looked like they hadn’t eaten,” Kester said.

Firefighters say the puppies were found along Peoria Street. They wasted no time taking stepping in and taking them to the vet.

Kester grabbed oxygen from his truck to help the weakest puppy.

“We placed the snout in and then we just held his head while we were getting him ready to go,” Kester said.

The puppies are being cared for at VCA Alameda East Veterinary Hospital. As seen from the pictures AFR provided, the puppies looked malnourished and dirty.

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It’s unclear who left the puppies or why. Officials haven’t said if they expect the puppies to recover. The firefighters say they’ve been thinking about them all day.

“We’re animal lovers. We’d do anything we can.”