Yes, mammal (including humans) have a nasolacrimal duct. It drains from the
eye into the nose. If it gets stopped up then the tears come down your face
(or Dagur''s). The vet inserts a small tube into the duct and flushes
saline to clean it out. Very easy and painless but it does look funny to see
all
the saline running down your face that is inserted up the nose.
Renee
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