Ant and Dec: A Spotter's Guide, again

After three years, I've sorted out with one of Ant and Dec is Ant, and which one out of Ant and Dec is Dec.

It's quite simple:

Dec is the shorter of the two and is therefore nearer the "deck".

Ant, on the other hand, has six legs, lives down a hole, and will eventually have his head bitten off by the Queen.

Got it? Good.

Let us never speak of this thing again.