Dark And Cool
If foxes like to create a dwelling place for themselves in a den, then why would the fox mother put her babies in a sewer grate? Well, the experts believe that the mother saw this location as a sort of replica of a den that would offer her cubs darkness and cool temperatures.
Mistake
The mother fox might have made a mistake by leaving her babies behind while picking her den. Despite the fact that the sewer was dark and cool, its similarities to typical fox dens weren’t enough to make it a good place for the cubs to be.