Display screen or portion thereof with animated graphical user interface

FIG. 1 is a front view of a display screen or portion thereof with animated graphical user interface showing a first image of my new design;

FIG. 2 is a second image thereof; and,

FIG. 3 is a third image thereof.

The outermost dashed broken lines in the Figures show a display screen or portion thereof, and form no part of the claimed design. The other dashed broken lines in the Figures show portions of the animated graphical user interface that form no part of the claimed design. The dot-dash broken lines and the areas within the dot-dash broken lines show portions of the animated graphical user interface that form no part of the claimed design.

The appearance of the animated images transitions between the images shown in FIGS. 1-3 . The process or period in which one image transitions to another forms no part of the claimed design.