Abandoned
Even if they were left by their parents, they knew that they had to be cautious whether their parents were still in the area to just find some food for their young ones or if they really abandoned them. Some of the animals would be aggressive if you took their babies, and they understood that they must be careful or else it would put their life in danger.
A Difficult Situation
When they saw the puppies under the sewer, they were surprised that they were fine because of the garbage, dirt, and mud surrounding them. It was a terrible sight especially that the firefighters knew that there was no sunlight that could warm the place up. It was obvious that the place was cold, and they should make a move to rescue them.