Whappet

dial. Also 9 wappet. [f. *whap, WAP sb.² + -ET.] A small dog addicted to ‘wapping’ or yelping.

1577.  Harrison, England, III. vii. (1878), 48. The whappet or prick-eard curre.

1622.  S. Ward, Life of Faith (1627), 62. As the sturdie Steede dashes out the little Whappets braines, so easily doth Death with the least kicke … the stoutest Constitution.

a. 1825.  Forby, Voc. E. Anglia, Wappet, a yelping cur.