Best timothy-based guinea pig pelletsSmall petsOxbow
Oxbow Essentials Adult Guinea Pig Food
Adult guinea pig pellets with stabilized vitamin C — feed beside unlimited hay
About $15–$30

Best everyday grass hay staple
Oxbow
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Long-strand timothy hay — the fiber foundation for rabbits, guinea pigs, and chinchillas
About $12–$22
Herbivore small pets need unlimited grass hay more than fancy treats. Oxbow Western Timothy is the widely recommended adult staple: fiber for gut motility and chew time for teeth. Store sealed and dry; dusty bags get returned. Pellets are a supplement — hay is the meal.
Who it's for: Rabbits, guinea pigs, and chinchillas on adult grass-hay diets.
Skip if: Your vet prescribed alfalfa for a growing/juvenile pet — different hay class.
Alternatives with different tradeoffs — not clones of the same pitch.
Best timothy-based guinea pig pelletsSmall petsOxbow
Adult guinea pig pellets with stabilized vitamin C — feed beside unlimited hay
About $15–$30
Best budget large habitat starterSmall petsAmazon Basics
Wide plastic-base cage with bottle, dish, hay guard, and balcony — measure before you buy
About $60–$90