Background: ownership, sourcing and positioning
Hill's Science Diet and Ziwi Peak sit at opposite ends of the ownership spectrum in the Australian cat food market. Hill's Science Diet faced a 2019 vitamin D over-supplementation recall on canned dog food that led to a US$12.5 million class-action settlement; cat food was not affected. Ziwi Peak is made using Z-TWINTECH, the proprietary two-stage low-temperature air-drying process developed by founder Peter Mitchell to shelf-stabilise raw diets without heat extrusion. Shoppers choosing between the two are effectively picking between corporate scale and founder-led focus.
Hill's Science Diet is made in the United States. It employs more than 150 in-house veterinarians and PhD nutritionists, and runs a veterinary-only clinical portal at myhillsvet.com.au.
Ziwi Peak is made at a purpose-built kitchen in Napier, New Zealand, which replaced its original Mount Maunganui operations in 2022, with all meat and seafood sourced within New Zealand. It uses recipes that routinely carry 96 percent meat, organs, bone and green-lipped mussel with zero grain, legume or potato content.
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