Are pine wood chips dangerous for rabbits?

Yes, pine wood chips can be dangerous for rabbits. They contain substances called phenols, which can cause liver and kidney damage in rabbits. Additionally, pine wood chips can splinter and cause damage to rabbits' mouths and GI tracts if ingested.

For these reasons, it's best to avoid using pine wood chips as bedding or litter for rabbits. Other, safer options include hay, straw, or commercial paper-based bedding specifically designed for rabbits.