Their Dark Coat Would Soon Be Shed
The reason that the fire department didn’t know that the animals were foxes was because of their dark coats. Baby foxes will shed their dark coats after a few weeks and grow red fur and teeth, so they more resemble their species. The fire department had no idea about this process, which is why they quickly assumed that the animals were puppies. So, the group had to be taken to a different location to be treated.