docs: def aging_csv(request):
      """This view generates a csv output file of all animal data for use in aging analysis.
  	
  	The view writes to a csv table the animal, strain, genotype, age (in days), and cause of death."""
      animal_list = Animal.objects.all()
      response = HttpResponse(content_type='text/csv')
      response['Content-Disposition'] = 'attachment; filename=aging.csv'
      writer = csv.writer(response)
      writer.writerow(["Animal", "Strain", "Genotype", "Gender", "Age", "Death", "Alive"])
      for animal in animal_list.iterator():
          writer.writerow([
              animal.MouseID, 
              animal.Strain, 
              animal.Genotype, 
              animal.Gender,
              animal.age(),
              animal.Cause_of_Death,
              animal.Alive            
              ])
      return response