- German „Guideline for intact tails“ (in German only): Practical information regarding tail biting for farmers who want to stop tail docking.
- Overview of research projects on tail biting in Germany and other countries.
- „Deutscher Schweine-Boniturschlüssel“: Scoring key for tail and ear lesion which was agreed upon between German tail biting projects. Includes example pictures.
- Video on animal welfare in pig farming by the Federal Information Centre Agriculture (BZL)