{
  "checked_on": "2026-09-26",
  "method": "公开商品页定向查阅：同平台 Chewy、同品牌 PureBites，分别选猫用和狗用的鸡胸肉、三文鱼肉冻干各一页。不是随机样本或销量调查；页面内容可能更新，抓取缓存与实际页面时间可能不同。",
  "limitation": "评分是页面累计值，可能跨规格合并，上市年限、促销、流量和评价率未知；不得用数量比例当销量比例或全美蛋白偏好。三文鱼肉不等同于鱼皮、整鱼或虾。",
  "samples": [
    {"pet":"猫","protein":"鸡胸肉","brand":"PureBites","platform":"Chewy","size_oz":2.3,"ratings":2693,"stars":4.5,"url":"https://www.chewy.com/purebites-chicken-breast-freeze-dried/dp/152411","observed":"页面标题为 2.3 oz 猫用鸡胸肉冻干；页面评分区 2693 Ratings，4.5。"},
    {"pet":"猫","protein":"三文鱼肉","brand":"PureBites","platform":"Chewy","size_oz":2,"ratings":1368,"stars":4.0,"url":"https://www.chewy.com/purebites-freeze-dried-salmon-cat/dp/236182","observed":"页面标题为 2 oz 猫用三文鱼冻干；页面评分区 1368 Ratings，4.0。"},
    {"pet":"狗","protein":"鸡胸肉","brand":"PureBites","platform":"Chewy","size_oz":3,"ratings":2449,"stars":4.4,"url":"https://www.chewy.com/purebites-chicken-breast-freeze-dried/dp/35011","observed":"页面标题为 3 oz 狗用鸡胸肉冻干；页面评分区 2449 Ratings，4.4。"},
    {"pet":"狗","protein":"三文鱼肉","brand":"PureBites","platform":"Chewy","size_oz":2.47,"ratings":764,"stars":4.4,"url":"https://www.chewy.com/purebites-salmon-freeze-dried-raw-dog/dp/177294","observed":"页面标题为 2.47 oz 狗用三文鱼冻干；页面评分区 764 Ratings，4.4。"}
  ],
  "supply_observations": [
    {"url":"https://www.chewy.com/purebites-chicken-breast-freeze-dried/dp/35011","observation":"页面对比模块可见 PureBites、Stella & Chewy's、Vital Essentials、Stewart、HOLI、Blackwood 的鸡胸肉冻干商品。该模块由平台选择，不能当搜索结果市场份额。"},
    {"url":"https://www.chewy.com/purebites-freeze-dried-salmon-cat/dp/236182","observation":"页面对比模块可见 PureBites、Whole Life、Halo 的三文鱼肉冻干猫零食。不能据此推断鱼皮的竞争程度。"}
  ],
  "interpretation": "本小样本中猫与狗的鸡胸肉页面累计评分数均高于三文鱼肉，鸡胸肉适合作为需求基准；同时两者均有评分与多品牌供给线索。证据不足以证明美国总体更喜欢鸡、鸡销量更高或鱼类竞争更低。"
}