So Big is definitely saying something that begins with the "kuh" sound and includes a hard "t" whenever he sees one of our three cats.
Often it is either whispered or in a sing-song-y voice that sounds absurdly similar to the way that I call the cats in the morning when I want them to come and eat.
While we do consider this his first "word", we're still unsure as to whether or not he completely grasps its meeting as he applies it to any sort of animal (animate or inanimate).
Here's a shout out to LesbianDad who brought home another Big! Welcome Jonah!