Snout is an extremely common feature among anthropomorphic and feral characters alike, excluding mostly invertebrates and avians; this happens in such a way that I can't see what usefulness the 'snout' tag could truly have (even if it wasn't terribly undertagged).
Also, we have tags like 'humanoid_face', 'beak', 'proboscis', 'trunk' etc. that are way more specific; additionally, we could use 'long_snout' (or similar tag) for snouts that are longer than usual.
I brought this to forum basically to know which is the general opinion regarding this subject matter, as well as to discuss if the referred tag really should be invalidated or if we should mobilize extra effort in order to tag it properly instead.
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