Questione giuridica chiave
Whether the defendant acted under an unavoidable mistake about unlawfulness under Art. 21 CP
Decisione estratta
The factual findings supporting an unavoidable mistake were incorrect; the defendant had serious doubts and should have inquired, so the acquittal could not stand.
Motivazione estratta
She knew tail docking was prohibited in Switzerland, the foreign legality was irrelevant, the prior closure decision concerned a different territorial issue, and customs' passivity did not create a justified belief in legality.