I've noticed my three week old DD has no lingual frenulum - the bit that anchors the tongue to the bottom of the mouth.
At first I was just glad she obviously didn't have tongue tie but I'm now starting to worry about it a bit.
Is there anyone else out there whose children (or who themselves) don't have one? There's virtually nothing about it online - except that it can be a sign of hypermobility and she doesn't seem to have hypermobile joints so that doesn't seem to be it...