Run: 2026-05-01-01KQHSQ1PKQ0G9ADDDPXYVMS6J

cat The text describes Emma's pet as one that "purrs and has whiskers." This matches the known traits of a cat (purring is a distinctive vocalization cats produce, and whiskers are a prominent facial feature). By process of elimination, it cannot be the dog (John's), hamster (Peter's), or any other non-purring animal. The mention of Sarah owning a cat simply identifies another owner but does not contradict the inference for Emma, as multiple characters can own the same pet type. No tools or external knowledge are required; the conclusion follows directly from matching the provided descriptors to common pet characteristics.