Hey, Brendy, like those bits? Do you not care so much for the kibbles? (BG)

(Kibbles & Bits is brand/variety of cat food over here. If I remember right it's actually something like "Brand X cat food with kibbles and bits". The kibbles and bits are little morsels of whatever that are supposed to be very appealing to the cats. I had never heard the word "kibble" before, and suspect they made it up.)

Okay, I give up. What, in this context, is a bit?