Toddle, bottle, space-shottle... wait, no, not THAT one! coddle,mottle.
SWADDLE
waddling its tail waddling its tail
Waddling Willie - 1914 was released on: USA: 28 December 1914
Waddling.
Waddling.
Waddling.
"Waddling" is the present participle of "waddle", to employ a swaying gait.
waddling
They waddle. Ducks move there hips in a rolling fashion.
Penguin
The platypus walks with a "waddling" movement.
By simply waddling. Kinda obvious.
They manoeuvre by waddling with their flippers.