Not ordinarily. Dalek Sec became a human/Dalek hybrid, and believed that it was wrong of Davros to create them without emotion. ("Daleks in Manhattan"). When the 12th Doctor went inside the Dalek to find what was malfunctioning, he discovered that the Dalek (nicknamed Rusty) had seen the birth of a star. Once fixed, Rusty reverted back to Exterminate mode. When they reactivated Rusty's memories, he rescued the soldiers. Before he rejoined the daleks to continue destroying them, Rusty said that he wasn't a good dalek, but the Doctor is. ("Into the Dalek").