Private equity firm TPG Capital is developing alternative exit strategies for Greencross, Australia’s largest pet health and veterinary services provider, after supermarket giant Coles terminated its acquisition negotiations.

The breakdown ends a nine-month period of intense speculation regarding a potential merger that would have significantly reshaped the country’s $18 billion pet care sector.

Coles had been positioning itself to move beyond its traditional grocery aisles into the high-margin veterinary services market, but ultimately withdrew from the deal.

The supermarket operator’s decision to walk away leaves TPG, which has owned Greencross for several years, holding a major asset without a confirmed buyer.

Sources indicate TPG is now working on a "plan B," which could involve seeking a different strategic partner or pursuing an initial public offering, though no specific timeline or counterparty has been confirmed.

The failed transaction removes a high-profile potential listing from Australia’s public equity markets.