A juvenile Philippine crocodile, although the scalation on the neck is rather unusual. Normally, there are four post-occipital scales, and a group of four larger nuchal scales. Here, we see no obvious post-occipital scales, and the nuchal scales comprise two regular scales on the left but one larger one on the right. Variation in neck scalation (and indeed everywhere on the body) is normally quite common, which is why identification of species from scalation alone can be a little error-prone.
Photograph © John White
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