Source : Webster's Revised Unabridged Dictionary (1913)

Whelp \Whelp\, v. i. [imp. & p. p. {Whelped}; p. pr. & vb. n.
   {Whelping}.]
   To bring forth young; -- said of the female of the dog and
   some beasts of prey.

Source : WordNet®

whelped
     adj : (used of a canine) born