These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Various psychoanalysts have deduced from Mother Goat's single status that the wolf should be considered the father of the kids.
In compliance with the former thesis, the tale has been assumed to be a distant echo of the Greek myth (as told in Hesiod's Theogony) that Kronos ate all his children by Rhea, and only the youngest one, Zeus, escaped that fate and later defeated his father. Note that while Zeus was in hiding from Kronos, he was fed and cared for by a (nymph in the shape of a) goat, Amalthea.
The seven kids are the days of the week, and the wolf is night who "swallows" them, but it fails at devouring the last one (Sunday), as the week begins anew and the days are "reborn".