Unbenownst to many, modern Hebrew has two sets of letters. One set are basically 'hardened letters' that have 'holes in them'. To connote that a command or communication is to dead or to strangers then perhaps DOG LATIN mimicks that.
Note the 'h' is breath-like, put a dot in it to harden it (like rigor mortis) kh becomes k (the breath is gone). If you think about it you could at a stretch reckon English that 't' has a sound and 'T' doesn't unless its at the start of a sentence then you presume its an 'alive' 't'.There are 22 basic letters in the Hebrew alphabet, and five special final forms (for the letters kaf, mem, nun, peh and tzade). Some letters are hardened by the insertion of a dot (vet becomes bet, khaf becomes kaf).
Related:
So-So-Security (PDF page 2)