to yelp

yelp - O.E. gelpan (Anglian), gielpan (W.Saxon) "to boast," from P.Gmc.
*gelpanan. Meaning "quick, sharp bark or cry" (n.) is c.1500.

German : klaffen, kläffen MHD="klaffen", AHD="klafo:n"
Albanian : leh (lost of k)
Romanian : clefãi

Rom. Word is given as onomatopoeic formation and all the derivatives as
coming from this onomatopoeia Semantically is no difference. In all
languages means " to bark"

Question: can we find there slavic cognates too ?

Alex