It is currently a legal requirement for dogs to be microchipped but not cats. It should be a legal requirement for cats to be chipped too, this would help to prevent pet cats being stolen and help reunite lost pets to their owners.
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Cats are more likely to be hit by a car and it is also not required for people to report when this happens. If all pet cats were microchipped, it would, a) help rescues to identify whether a cat is owned; and, b) help rescues to have legal rights to rescue and rehome unchipped cats