{"links":{"self":"https://petition.parliament.uk/petitions/757619.json"},"data":{"type":"petition","id":757619,"attributes":{"action":"Review of mandatory cat microchipping and informed consent requirements","background":"Review the current law for compulsory microchipping of cats in England. A review could consider introducing microchipping as optional, or setting clearer requirements to ensure cat owners are informed of recognised but rare risks, including the potential for injection-site sarcomas.","additional_details":"This could be known as Princess' law.\r\n\r\nInjection-site sarcomas are a documented but uncommon adverse outcome of any injections in cats & may be aggressive in nature.\r\n\r\nFor context, my cat, Princess, later developed an injection-site sarcoma & was ultimately euthanised to prevent further suffering. This submission does not allege negligence or misconduct by veterinary professionals, but seeks a proportionate review of existing policy to balance animal welfare, owner autonomy, & public policy objectives.\r\n","committee_note":"","state":"open","signature_count":61,"created_at":"2026-01-18T11:57:51.972Z","updated_at":"2026-04-24T21:11:00.000Z","rejected_at":null,"opened_at":"2026-02-24T16:36:03.738Z","closed_at":null,"moderation_threshold_reached_at":"2026-01-20T13:27:50.000Z","response_threshold_reached_at":null,"government_response_at":null,"debate_threshold_reached_at":null,"scheduled_debate_date":null,"debate_outcome_at":null,"creator_name":"Michael James Mayhew","rejection":null,"government_response":null,"debate":null,"departments":[{"acronym":"DEFRA","name":"Department for Environment, Food and Rural Affairs","url":"https://www.gov.uk/government/organisations/department-for-environment-food-rural-affairs"}],"topics":[],"signatures_by_country":[{"name":"United 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