yapping

Concise Oxford English Dictionary © 2008 Oxford University Press:
yap/jap/

▶verb (yaps, yapping, yapped)

• 1 give a sharp, shrill bark.

• 2 informal talk at length in an irritating manner.

▶noun a sharp, shrill bark.

– derivatives
yapper noun,
yappy adjective (informal).

– origin C17: imitative.