26 Required by national law3 Partly required or being introduced1 Not required nationally
| Country | Status | What the law says |
|---|---|---|
| Austria | Required by national law | Yes. Dogs must be microchipped by 3 months of age (or before changing owner) and registered in the national pet database; breeding cats too. |
| Belgium | Required by national law | Yes. Belgium has required dogs to be microchipped and registered (DogID) since 1998, before 8 weeks of age or before they are sold or given away. Cats must be registered too (CatID). |
| Bulgaria | Required by national law | Yes. Dogs must be microchipped and registered. |
| Croatia | Required by national law | Yes. Dogs must be microchipped and registered; for cats it is voluntary. |
| Cyprus | Required by national law | Yes. Dogs must be microchipped and registered with the government veterinary service. |
| Czechia | Required by national law | Yes. Dogs must be microchipped and registered; for cats it is voluntary. |
| Denmark | Required by national law | Yes. Dogs must be microchipped and registered in the Danish dog register. |
| Estonia | Partly required or being introduced | Being introduced. A 2026 law makes microchipping compulsory for dogs and cats; until it takes effect, identification is set by local governments. |
| Finland | Required by national law | Yes. Dogs must be microchipped and registered in the national dog register; for cats it is voluntary. |
| France | Required by national law | Yes. Dogs, cats and ferrets must be identified (microchip or tattoo) and registered in the national I-CAD database before being sold or given away. |
| Germany | Partly required or being introduced | Not nationally. Several states (Länder) require dogs to be microchipped and registered, and many municipalities require it with the dog tax — check your state. |
| Greece | Required by national law | Yes. All dogs and cats must be microchipped and registered in the national pet register. |
| Hungary | Required by national law | Yes. Dogs must be microchipped and registered; for cats it is voluntary. |
| Ireland | Required by national law | Yes. Since 2016 every dog must be microchipped and registered by 12 weeks of age, or before it is sold or given away. |
| Italy | Required by national law | Yes. Dogs must be microchipped and registered in the regional dog registry, which feeds the national one. |
| Latvia | Required by national law | Yes. Dogs must be microchipped and registered; for cats and ferrets it is voluntary. |
| Lithuania | Required by national law | Yes. Dogs, cats and ferrets must be microchipped and registered. |
| Luxembourg | Required by national law | Yes. Dogs and cats must be identified and registered. |
| Malta | Required by national law | Yes. Dogs must be microchipped and registered; for cats it is voluntary. |
| Netherlands | Required by national law | Yes. Since 2013 dogs must be microchipped and registered within 7 weeks of birth (or before leaving the breeder). |
| Norway | Not required nationally | No. Norway has no general requirement to microchip dogs living there — a proposal to make it compulsory was rejected in 2019 — though a microchip is required to bring a dog into the country. |
| Poland | Partly required or being introduced | Being introduced. A 2026 law (KROPiK) creates a national register and makes microchipping and registration of dogs and cats compulsory after a transition period; until then many municipalities require it. |
| Portugal | Required by national law | Yes. Dogs, cats and ferrets must be microchipped and registered in the national SIAC database. |
| Romania | Required by national law | Yes. Dogs must be microchipped and registered. |
| Slovakia | Required by national law | Yes. Dogs must be microchipped and registered; for cats it is voluntary. |
| Slovenia | Required by national law | Yes. Dogs must be microchipped and registered; cats only when they travel abroad. |
| Spain | Required by national law | Yes. Dogs and cats must be microchipped and registered in the registry of their autonomous community. |
| Sweden | Required by national law | Yes. Dogs must be ID-marked and registered with the Swedish Board of Agriculture, and cats are being added to the same requirement. |
| Switzerland | Required by national law | Yes. Dogs must be microchipped and registered in the national AMICUS database by 3 months of age (or within 10 days of arriving in Switzerland). |
| United Kingdom | Required by national law | Yes. Dogs must be microchipped and registered by 8 weeks of age, and since June 2024 cats in England by 20 weeks. Keepers must keep their details up to date. |