This reflex is tested in a neurological exam and if present, is a sign of brain damage or dysfunction. Along with the "suck", palmomental reflexes and other reflexes, snout is considered a frontal release sign.
A neurological exam tests for this reflex, which can be a sign of brain injury or malfunction.  Along with the "suck" reflex and other reflexes, snout is also considered a sign of frontal release.