What difference can you spot
Between an alligator and a croc
Well first there's colours: light and dark
Which help to set the two apart
Or failing that try this for size:
Open up those beady eyes
And scan the length of your beast
The alligator will be least
Then last of all find jaw and snout
For then you'll know just all about
The rounded face - but don't reach in
He'll snaffle your arm with a top-toothed grin