Here are natural / “natural-style” pet food companies that offer grain‑free cat formulas (dry, wet, air‑dried or raw-inspired). Availability and specific recipes vary by country and product line—check the brand pages or local retailers for what’s sold in Australia.

• Blue Buffalo — BLUE Wilderness (grain‑free cat recipes). (bluebuffalo.com)
• Canidae — PURE (limited‑ingredient, grain‑free cat formulas). (canidae.com)
• Farmina (N&D) — Natural & Delicious / N&D Prime grain‑free feline lines. (farmina.com)
• Fromm Family Foods — multiple cat recipes formulated without grains (wet and some dry). (frommfamily.com)
• Instinct (Nature’s Variety) — Original / Raw‑inspired grain‑free wet & dry cat foods. (instinctpetfood.com)
• Merrick — Purrfect Bistro and Limited Ingredient lines with grain‑free cat recipes. (merrickpetcare.com)
• Nulo — grain‑free wet toppers/purees and dry/wet cat options. (nulo.com)
• Orijen (Champion Petfoods) — ORIJEN cat formulas (species‑appropriate, high‑protein; many grain‑free options). (championpetfoods.com)
• ACANA (Champion Petfoods) — ACANA cat grain‑free lines (various recipes). (emea.acana.com)
• Taste of the Wild — grain‑free feline recipes (dry formulas). (tasteofthewildpetfood.com)
• Weruva — grain‑free, gluten‑free wet cat food recipes. (weruva.com)
• ZIWI (ZIWI Peak) — air‑dried and canned grain‑free cat foods (New Zealand‑made). (ziwipets.com)

Quick notes

• “Grain‑free” can mean different things (no corn/wheat/soy vs. no cereals at all). Check the ingredient panel for exact formulation.
• If you’re switching a cat to grain‑free food (or have a cat with health issues), it’s a good idea to discuss the change with your veterinarian to make sure it’s appropriate.

If you’d like, I can: (a) narrow this to brands commonly sold in Australia, (b) list specific grain‑free recipes from any one brand, or (c. ) show local retailers that stock a particular brand.