{"niche":"哪些干粮最适合老年犬？","description":"What are the best dry dog foods for senior dogs?","products":[{"brand":"Diamond","model":"Diamond Naturals Senior Formula 35 lb bag","price_gbp":32.21,"origin_country":null,"specs":{"grain_free":false,"fat_content":"11.0%","caloric_content":"347","protein_content":"25.0%","moisture_content":"10.0%","crude_fiber_content":"3.0%"},"confidence_score":null,"summary":"Diamond Naturals Senior Chicken, Egg & Oatmeal Formula is a senior-specific dry dog food with cage-free chicken as the first ingredient, added glucosamine and chondroitin for joint support, and guaranteed probiotics for digestion. It suits older dogs needing moderate protein and fat with joint and digestive support.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Petco","url":"https://www.petco.com/product/diamond-naturals-senior-dry-dog-food","currency":"USD","source_country":"US","price":46.99,"price_gbp":35.2,"scraped_at":"2026-06-08T23:49:13.803034"},{"label":"Tractor Supply","url":"https://www.tractorsupply.com/tsc/product/diamond-naturals-senior-dog-food-35-lb-bag","currency":"USD","source_country":"US","price":44.99,"price_gbp":33.71,"scraped_at":"2026-06-08T23:49:16.824530"},{"label":"Family Farm & Home","url":"https://www.familyfarmandhome.com/diamond-naturals-dog-food-230470.html","currency":"USD","source_country":"US","price":42.99,"price_gbp":32.21,"scraped_at":"2026-06-08T23:49:19.829902"}]},{"brand":"Hill's Science Diet","model":"Science Diet Adult 7+ Chicken, Barley & Brown Rice 15 lb bag","price_gbp":38.95,"origin_country":null,"specs":{"grain_free":false,"fat_content":"15%","caloric_content":"365","protein_content":"23.8%","moisture_content":null,"crude_fiber_content":"1.7%"},"confidence_score":null,"summary":"Dry kibble formulated with chicken, barley and brown rice to support lean muscle, healthy coat and digestion in mature dogs (7+). Suitable for adult and senior dogs who tolerate grains and need balanced, vet-recommended nutrition.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Brothers Country Supply","url":"https://brotherscountrysupply.com/products/science-diet-15lb-adult-7-dog-food","currency":"USD","source_country":"US","price":51.99,"price_gbp":38.95,"scraped_at":"2026-06-08T23:47:46.617706"},{"label":"Brothers Country Supply (alternate listing)","url":"https://brotherscountrysupply.com/products/science-diet-15lb-adult-7-dog-food","currency":"USD","source_country":"US","price":51.99,"price_gbp":38.95,"scraped_at":"2026-06-08T23:47:49.806003"},{"label":"1800PetMeds","url":"https://www.1800petmeds.com/dog/food/product/hills-science-diet-adult-7-chicken-meal-barley-rice/prod13712.html","currency":"USD","source_country":"US","price":51.99,"price_gbp":38.95,"scraped_at":"2026-06-08T23:47:52.924483"}]},{"brand":"Blue Buffalo","model":"Life Protection Formula Senior Chicken & Brown Rice 30 lb bag","price_gbp":37.45,"origin_country":null,"specs":{"grain_free":false,"fat_content":"10%","caloric_content":"343","protein_content":"18%","moisture_content":"10%","crude_fiber_content":"7%"},"confidence_score":null,"summary":"Dry senior dog formula made with real deboned chicken, whole grains, LifeSource Bits, glucosamine and chondroitin to support joint, immune and overall senior health. Suited for older dogs needing joint support and balanced maintenance nutrition.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Centinela Feed and Pet Supplies","url":"https://www.centinelafeed.com/blue-buffalo-life-protection-formula-chicken-%26-brown-rice-recipe-senior-dry-dog-food%2C-30-lb/320203.html?lang=default","currency":"USD","source_country":"US","price":74.99,"price_gbp":56.18,"scraped_at":"2026-06-08T23:48:04.743067"},{"label":"Horses & Hounds","url":"https://horsesandhounds.com/products/blue-buffalo-life-protection-natural-chicken-brown-rice-recipe-senior-dry-dog-food","currency":"USD","source_country":"US","price":94.99,"price_gbp":71.17,"scraped_at":"2026-06-08T23:48:07.768939"},{"label":"Lowe's Foods (product page)","url":"https://shop.lowesfoods.com/products/blue-buffalo-senior-life-protection-chicken-and-rice-recipe-dry-food-5l/2870252","currency":"USD","source_country":"US","price":49.99,"price_gbp":37.45,"scraped_at":"2026-06-08T23:48:10.906239"}]},{"brand":"Purina ONE","model":"SmartBlend Vibrant Maturity 7+ Chicken Formula 31.1 lb bag","price_gbp":41.2,"origin_country":null,"specs":{"grain_free":false,"fat_content":"13.0%","caloric_content":"363 kcal/cup","protein_content":"28.0%","moisture_content":"12.0%","crude_fiber_content":"4.5%"},"confidence_score":null,"summary":"High-protein dry dog food for senior dogs (7+) with real chicken as the first ingredient, added MCT-rich vegetable oil for mental sharpness, and nutrients for joint, heart, immune, skin and coat support. Suits older dogs needing maintained muscle mass and increased activity support.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Petco","url":"https://www.petco.com/product/purina-one-smartblend-vibrant-maturity-7-senior-formula-dog-food","currency":"USD","source_country":"US","price":57.99,"price_gbp":43.45,"scraped_at":"2026-06-08T23:48:41.088792"},{"label":"Tractor Supply","url":"https://www.tractorsupply.com/tsc/product/purina-one-senior-dry-dog-food-smartblend-vibrant-maturity-adult-7-formula-311-lb-bag","currency":"USD","source_country":"US","price":54.99,"price_gbp":41.2,"scraped_at":"2026-06-08T23:48:44.120344"},{"label":"Purina","url":"https://www.purina.com/dogs/shop/purina-one-vibrant-maturity-senior-dry-dog-food","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T23:48:47.145582"}]},{"brand":"Purina Pro Plan","model":"Pro Plan Adult 7+ Bright Mind Chicken & Rice 34 lb bag","price_gbp":65.17,"origin_country":null,"specs":{"grain_free":false,"fat_content":"14.0%","protein_content":"29.0%","moisture_content":"12.0%","crude_fiber_content":"3.0%"},"confidence_score":null,"summary":"Dry senior dog food formulated for dogs 7+ with enhanced botanical oils for cognitive support, real chicken as first ingredient, added probiotics, omega-3s and glucosamine for joint and digestive support. Suited for older dogs needing brain-supporting nutrients and balanced maintenance nutrition.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Pro Plan VetDirect","url":"https://www.proplanvetdirect.com/canine-pro-plan-bright-mind-adult-7-chicken-rice-formula","currency":"USD","source_country":"US","price":86.99,"price_gbp":65.17,"scraped_at":"2026-06-08T23:48:23.061333"},{"label":"Tractor Supply","url":"https://www.tractorsupply.com/tsc/product/purina-pro-plan-senior-dry-dog-food-bright-mind-chicken-rice-formula-30-lb-bag","currency":"USD","source_country":"US","price":86.99,"price_gbp":65.17,"scraped_at":"2026-06-08T23:48:26.120936"},{"label":"Wilco Farm Store","url":"https://www.farmstore.com/product/pet/dog-food/dry-senior-dog-food/purina-pro-plan-adult-7-bright-mind-chicken-rice-formula-dog-food-30-lb-38624","currency":"USD","source_country":"US","price":91.99,"price_gbp":68.92,"scraped_at":"2026-06-08T23:48:29.145825"}]},{"brand":"Iams","model":"Proactive Health Healthy Aging with Real Chicken Senior 29.1 lb bag","price_gbp":35.2,"origin_country":null,"specs":{"grain_free":false,"fat_content":"10.5%","caloric_content":"349","protein_content":"24.0%","moisture_content":"10.0%","crude_fiber_content":"5.0%"},"confidence_score":null,"summary":"Dry senior dog food with real chicken as the first ingredient, DHA for mental and visual sharpness, and a blend of fibers and prebiotics to support digestion and immune health. Suited for senior dogs (8+ years) needing balanced calories and joint/organ support.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"PetSmart","url":"https://www.petsmart.com/dog/food/dry-food/iams-proactive-health-senior-dry-dog-food---healthy-aging-chicken-and-whole-grains-3489.html","currency":"USD","source_country":"US","price":46.99,"price_gbp":35.2,"scraped_at":"2026-06-08T23:48:58.986178"},{"label":"Tractor Supply","url":"https://www.tractorsupply.com/tsc/product/iams-proactive-health-mature-adult-dog-food-15-lb","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T23:49:02.068631"}]},{"brand":"ORIJEN","model":"ORIJEN Senior Grain-Free High-Protein 23.5 lb bag","price_gbp":55.43,"origin_country":null,"specs":{"grain_free":true,"fat_content":"15%","caloric_content":"427","protein_content":"38%","moisture_content":"12%","crude_fiber_content":"8%"},"confidence_score":null,"summary":"High-protein, grain-free senior formula with 85% animal ingredients, added glucosamine and omega fatty acids to support joints, weight and immune health. Suited for senior dogs needing higher protein, joint support, and lower-fat maintenance.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"ORIJEN","url":"https://www.orijenpetfoods.com/en-US/dogs/dog-food/senior/ds-ori-senior.html","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T23:49:31.519057"},{"label":"Petco","url":"https://www.petco.com/product/orijen-senior-dry-dog-food","currency":"USD","source_country":"US","price":106.99,"price_gbp":80.16,"scraped_at":"2026-06-08T23:49:34.519917"},{"label":"Only Natural Pet","url":"https://www.onlynaturalpet.com/products/orijen-grain-free-senior-dry-dog-food","currency":"USD","source_country":"US","price":73.99,"price_gbp":55.43,"scraped_at":"2026-06-08T23:49:37.521974"}]}]}