https://www.petmd.com/dog/general-health/when-is-a-dog-considered-senior
When Is a Dog Considered a Senior? | PetMD
Dec 29, 2025 - When is a dog considered a senior? Learn the signs that your dog is aging and when small, large, and medium-sized dogs are officially seniors.
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https://www.petmd.com/cat/general-health/when-is-cat-considered-senior
When Is a Cat Considered a Senior? What To Expect When Your Cat’s Aging | PetMD
Jun 10, 2025 - As cats age, their needs change. Here is a guide on how your senior cat’s dietary and health needs may change as they get older.
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