Wanting to spare the group of dwarfs (because they were harder to find than other kinds of test subjects, such as twins), Mengele arranged to have special living quarters built for them, so they could be monitored. To keep them healthy for his human experimentation, he arranged for them to have more hygienic living conditions, better food and their own bedclothes. Mengele allowed them to keep their own clothes, and forced the taller members of the group to carry the dwarfs to the experimentation sites.