- This record is for the oldest pair of cat siblings.
- This record is for two living domesticated cat siblings with the same biological parents.
- This record is measured by the combined age in years and days.
- For the purpose of this record, only cats who are genetic siblings (sharing at least one parent) are acceptable.
- For the purpose of this record, the cats must be a internationally recognised domestic breed, as defined by an association such as TICA.
