Paedomorphy

The clade 4-1 salamanders recently lived in environments that would make paedomorphy unlikely, but now even when they are living in large, permanent ponds that induce paedomorphy in clade 4-2 salamanders, they are incapable of becoming paedomorphs.

Richard Wrangham has noted that the domestication of animals usually tames them by slowing down components of the developmental timetable to retain juvenile traits into adulthood, a process called pedomorphy or neoteny.