Sheep Mulesing: Welfare Arguments For, Against, and Alternatives

Mulesing is a surgical procedure used in Merino sheep to prevent flystrike. Its welfare costs are significant, and evidence-based alternatives are progressively replacing it in the global wool industry.

Key Facts

Mulesing involves removing folds of skin around the tail area of Merino lambs without anesthesia in conventional practice
The procedure causes acute, significant pain and takes weeks to heal; it is performed primarily in Australia
Its purpose is to prevent flystrike (myiasis), where blowfly larvae burrow into skin folds, causing severe welfare harm
Breeding for plain-bodied Merinos with less skin wrinkling is an effective alternative that eliminates the need for mulesing
Major wool buyers and brands including Zara and H and M have committed to mulesing-free wool sourcing
Pain relief during and after mulesing is required under Australian model codes and increasingly in practice

Welfare Considerations

Mulesing presents a genuine welfare dilemma: the procedure causes acute pain and a prolonged recovery, but it prevents flystrike, which causes severe and potentially fatal suffering in affected sheep. The welfare resolution lies in eliminating the need for mulesing through breeding programs that select for plain-bodied Merinos with minimal skin wrinkling. This approach has been demonstrated as effective across significant portions of the Australian Merino industry and renders the mulesing debate moot. Where mulesing continues, mandatory analgesia use before and after the procedure is an ethical minimum. The progressive industry transition toward non-mulesed wool, driven by consumer and retailer pressure, demonstrates that welfare improvements at scale are achievable through market mechanisms.

What You Can Do

Choose wool products labeled as non-mulesed or ZQUE certified from non-mulesed flocks
Support wool brands that have made and verified mulesing-free commitments across their supply chains
Advocate for accelerated transition to plain-bodied Merino breeding to eliminate the need for mulesing
Support mandatory analgesia requirements for any mulesing that continues during the transition period
Engage with retailers to require non-mulesed wool certification in their fashion supply chains