Final:z:Badguy:shrussia: (npub1xan…jlvy) कलियुगKokoro (npub1hrk…3nzn) It used to be pets needed a tattoo, usually inside the ear because that's the one place with no fur so you can check it without shaving
it did cause problems, it was easier to get infected, pets with smaller ears were harder to tattoo and it was longer and more painful to the pet to tattoo them
the short range rfid chip actually makes sense compared to that