A "chubling" is a fat/pudgy/plump baby version of ANY species. This word originated today while my brother and I were looking at fat tadpoles.. he said "come check out these little fatties." I first commented on their excessive chubbiness, and my brother then referred to them as "chublings." ..I knew urbandic was the way to go with this fantastic word.
"yo, get over here and check out these little chublings"
.. a fat baby ANYTHING.. human/frog/dog/cat.. as long as it's chubby and a baby, it's a chubling.