Are Roof Rats Legal in Finland? Keeping, Breeding & Selling

• Supervisory Agency (Lupa- ja valvontavirasto, LVV), Nature Conservation Unit, written reply 24 June 2026 (from its staff lawyer, Lakimies): under the EU Invasive Species Regulation 1143/2014, because R. rattus is not found in the wild in Finland it is an alien species; under Section 3 of the Finnish Invasive Species Act an alien species may not be kept, bred, or otherwise handled in a manner that allows it to enter the environment, so it is not allowed to keep R. rattus as a pet or breed it in Finland.
• Finnish Food Authority (Ruokavirasto), Animal Health and Welfare, written reply June 2026: keeping rats as companion or hobby animals requires no permit or registration under the Animal Welfare Act 693/2023 (specified by Government Decree 674/2010). There is currently no list of species allowed or denied as companion animals. A notification of activity is required only at commercial scale: selling or handing over small companion animals (self-bred or not) from at least 7 cages, terraria, or aquaria in regular use, or keeping them at 20 or more (Animal Welfare Act Appendix 2). A wild, living-in-the-wild vertebrate may not be taken into possession.
• Finnish Environment Institute (Syke), CITES authority, written reply June 2026: Rattus rattus is not a CITES species and has no CITES requirements.
• Finnish Food Authority, import/export, June 2026: movement of pet rodents within the EU, Norway, and Switzerland follows the standard import/export rules; a third-country import (for example from the United States) is handled by the Food Authority’s border-control team under the usual rabbit-and-rodent import requirements.

Keeping / owning   Prohibited

Confidence: High · Last verified 2026-06-24

The Supervisory Agency (Lupa- ja valvontavirasto), the authority for alien-species law, confirmed in writing (June 2026, through one of its lawyers) that R. rattus is an alien species under EU Reg 1143/2014 because it is not found in the wild in Finland, and that Section 3 of the Finnish Invasive Species Act (1709/2015) forbids keeping an alien species in a manner that allows it to enter the environment. The agency’s stated position is that it is not allowed to keep R. rattus as a pet in Finland. Animal-welfare law imposes no separate species ban or permit, but it does not override the alien-species prohibition.

Sources: Eduskunta / Finlex, EU / EUR-Lex, Lupa- ja valvontavirasto (LVV), Suomen ympäristökeskus (SYKE)

Breeding   Prohibited

Confidence: High · Last verified 2026-06-24

The Supervisory Agency stated (June 2026) it is not allowed to breed R. rattus in Finland: §3 of the Invasive Species Act names breeding an alien species expressly. The welfare-law notification thresholds for selling self-bred animals are moot because lawful keeping/breeding does not exist.

Sources: Eduskunta / Finlex, EU / EUR-Lex, Lupa- ja valvontavirasto (LVV), Suomen ympäristökeskus (SYKE)

Selling or giving away   Prohibited

Confidence: Medium · Last verified 2026-06-24

Follows from the keeping/breeding prohibition: §3 forbids ‘otherwise handling’ an alien species in a manner that allows environmental entry, and you cannot lawfully possess R. rattus in Finland to sell, give, or rehome it. The Supervisory Agency did not address transfer separately, but there is no lawful pathway to keep the animal being transferred.

Sources: Eduskunta / Finlex, EU / EUR-Lex, Lupa- ja valvontavirasto (LVV), Suomen ympäristökeskus (SYKE)

Transport & import   Prohibited

Confidence: Medium · Last verified 2026-06-24

R. rattus is not a CITES species (Finnish Environment Institute, June 2026), so the bar is not CITES. But because keeping the animal in Finland is prohibited as an alien species, there is no lawful purpose for importing or moving one in to keep as a pet. Never release a roof rat.

Sources: Eduskunta / Finlex, EU / EUR-Lex, Ruokavirasto (Finnish Food Authority)

Source: Eduskunta / Finlex, EU / EUR-Lex, Lupa- ja valvontavirasto (LVV), Suomen ympäristökeskus (SYKE)

• If at or above 7 cages (professional) or 20 cages (large-scale), file the ilmoitus to Ruokavirasto via the animal-keeper and facility register at least 30 days before commencing
• Below the threshold, keep no notification is required; meet the Decree 674/2010 welfare and housing standards

Where: Ruokavirasto (Finnish Food Authority), via the animal-keeper and facility register (eläintenpitäjä- ja pitopaikkarekisteri)

Source: Ruokavirasto (Finnish Food Authority), Ruokavirasto (Finnish Food Authority)

Source: Finlex

In Finland the Supervisory Agency (Lupa- ja valvontavirasto, LVV) stated in June 2026 that keeping or breeding the roof rat (Rattus rattus) is prohibited because the species is an alien species under EU Regulation 1143/2014 and the Act on Managing the Risks Caused by Alien Species (vieraslajilaki 1709/2015). The familiar fancy rat (Rattus norvegicus) may be kept freely as an ordinary pet, even though it is equally an alien species under the same EU definition. The barrier is how the Act is read. Its duty is to handle an alien species so that it does not spread into the environment, which is a no-release and no-escape duty rather than, on its face, an absolute ban on secure indoor keeping. Roof rats cannot establish in the Finnish wild because they do not survive Finnish winters outdoors, which is the very reason the species is absent here, so a captive-bred, domesticated, strictly indoor line has essentially no pathway to enter the environment, the exact risk the Act is written to prevent. The roof rat is also on neither the EU Union list nor Finland’s national list (Government Decree 1725/2015), the lists that carry the deliberate, risk-assessed keeping bans, and it was historically the common rat of northern Europe before the brown rat displaced it, not a novel arrival.

The ask: Ask the Supervisory Agency to confirm in writing whether the Act on Managing the Risks Caused by Alien Species (1709/2015) prohibits the secure indoor keeping of a captive-bred, domesticated Rattus rattus that has no pathway to enter the Finnish environment, given that the operative duty is to prevent an alien species from spreading into the environment. If the answer is that it does, ask the Ministry of Agriculture and Forestry, which coordinates the Act and the national species list, to treat the domesticated roof rat consistently with the freely kept domesticated brown rat (Rattus norvegicus), since neither species is on the EU Union list or Finland’s national list. The relevant test is domestication, not the species label. The dog descends from the wolf and the cat from a wild felid, yet both are recognised as domestic animals, because what defines a domestic animal is generations of captive breeding for tameness. The already permitted fancy rat is itself the wild brown rat, domesticated only in the nineteenth century, so a captive-bred roof rat is the same case one species over (see https://blonderoofrat.com/how-the-sewer-rat-became-the-fancy-rat/ ).

Where the lever really is: Two levers, two bodies. The first is interpretive and sits with the Supervisory Agency (LVV), which administers the alien-species rules and gave the current reading: a written clarification of whether the Act’s environmental-spread duty actually reaches a secure, captive-bred indoor line that has no release pathway. The second is legislative and sits with the Ministry of Agriculture and Forestry, which coordinates the Act and owns the national list (Decree 1725/2015): if the Act is held to bar even secure indoor keeping, the fix is a list-level or regulatory clarification that treats the domesticated roof rat like the already permitted domesticated brown rat, neither being a listed, risk-assessed species. This is not an appeal asking an officer to ignore the law. It is a request to confirm the scope of a duty whose stated purpose is preventing environmental establishment, and, if needed, to correct an inconsistency between two equally non-native domesticated rats. Customs enforces the import side, and the former ELY-centre monitoring now sits within LVV.

Where to send it (more than one channel helps):

• Lupa- ja valvontavirasto (LVV, the Supervisory Agency) – administers the alien-species rules (executive / agency), kirjaamo@lvv.fi
  Primary channel. LVV administers the alien-species rules and gave the June 2026 interpretation that keeping R. rattus is prohibited (given by one of its lawyers; write to the agency rather than to an individual officer). Ask it to confirm in writing whether the Act’s duty to prevent an alien species from entering the environment actually prohibits secure, captive-bred, strictly indoor keeping that has no release pathway, and how that squares with the free keeping of the equally non-native fancy rat (R. norvegicus). Official registry kirjaamo@lvv.fi verified (agency operational since 1 January 2026); staff format firstname.lastname@lvv.fi.
• Maa- ja metsatalousministerio (Ministry of Agriculture and Forestry) – coordinates the Act + national list (executive / agency), kirjaamo.mmm@gov.fi
  Secondary, the list and legislative side. The Ministry coordinates the Act on Managing the Risks Caused by Alien Species and the national list (Government Decree 1725/2015). If LVV holds that secure indoor keeping is barred, this is the body that can clarify or correct the inconsistency, treating the domesticated roof rat like the already permitted domesticated brown rat, since neither is a listed, risk-assessed species. The Ministry publishes the Act’s official English translation on mmm.fi. Confirm the current registry address on mmm.fi (Finnish ministry registries use the kirjaamo.@gov.fi format).

A starting-point message, please put it in your own words; a short personal note carries far more weight than an identical form letter:

Subject: Does the Alien Species Act (1709/2015) prohibit secure indoor keeping of a domesticated roof rat (Rattus rattus)?

Dear Supervisory Agency,

I am writing about the Act on Managing the Risks Caused by Alien Species (1709/2015) and EU Regulation 1143/2014. I understand the Agency considers keeping and breeding the roof rat (Rattus rattus) to be prohibited because the species is an alien species. At the same time, the common fancy rat (Rattus norvegicus) may be kept freely as a pet, although it is equally an alien species under the same EU definition.

The Act's duty is to handle an alien species so that it does not spread into the environment. The animals I am describing are captive-bred, tame, kept strictly indoors, and never released. The roof rat does not survive Finnish winters outdoors, which is why the species is absent here, so a securely kept, captive-bred indoor line has essentially no pathway to enter the environment, the exact risk the Act is written to prevent. The roof rat is on neither the EU Union list nor Finland's national list (Government Decree 1725/2015).

The relevant test is domestication, not the species label. The dog descends from the wolf and the cat from a wild felid, yet both are recognised as domestic animals, because what defines a domestic animal is generations of captive breeding for tameness. The already permitted fancy rat is itself the wild brown rat, domesticated only in the nineteenth century, so a captive-bred roof rat is the same case one species over.

I would be grateful if you would confirm in writing whether the Act prohibits the secure indoor keeping of a captive-bred, domesticated Rattus rattus that has no pathway to enter the environment, and how that squares with the free keeping of the domesticated brown rat. If keeping is prohibited, please let me know how the question could be taken to the Ministry of Agriculture and Forestry, which coordinates the Act and the national list.

Thank you for your consideration.

[Your name]
[Your town/region]
[Your email]

Aihe: Kieltaako vieraslajilaki (1709/2015) tarhatun mustarotan (Rattus rattus) pitamisen turvallisesti sisatiloissa?

Hyva Lupa- ja valvontavirasto,

Kirjoitan vieraslajilaista (laki vieraslajeista aiheutuvien riskien hallinnasta, 1709/2015) ja EU:n vieraslajiasetuksesta (1143/2014). Ymmarran, etta virasto katsoo mustarotan (Rattus rattus) pitamisen ja kasvattamisen kielletyksi, koska laji on vieraslaji. Samaan aikaan tavallista kesyrottaa (Rattus norvegicus) saa pitaa vapaasti lemmikkina, vaikka sekin on saman EU-maaritelman mukaan vieraslaji.

Lain velvoite on kasitella vieraslajia siten, ettei se levia ymparistoon. Kuvaamani elaimet ovat tarhattuja, kesytettyja, niita pidetaan yksinomaan sisatiloissa eika niita koskaan paasteta luontoon. Mustarotta ei talvehdi Suomen luonnossa, minka vuoksi lajia ei taalla esiinny, joten turvallisesti sisatiloissa pidetylla, tarhatulla kannalla ei kaytannossa ole reittia ymparistoon, juuri sita riskia vastaan, jota laki on kirjoitettu suojaamaan. Mustarotta ei ole EU:n unionin luettelossa eika Suomen kansallisessa luettelossa (valtioneuvoston asetus 1725/2015).

Ratkaiseva peruste on kesyyntyminen, ei lajinimi. Koira polveutuu sudesta ja kissa villista kissaelaimesta, ja molempia pidetaan kotielaimina, koska kotielaimen tekee sukupolvien tarhaus kesyytta varten. Jo sallittu kesyrotta on itse villi rotta (Rattus norvegicus), joka kesyyntyi vasta 1800-luvulla, joten tarhattu mustarotta on sama tapaus yhden lajin paassa.

Pyydan ystavallisesti, etta virasto vahvistaa kirjallisesti, kieltaako laki turvallisesti sisatiloissa pidettavan, tarhatun mustarotan, jolla ei ole reittia ymparistoon, ja miten tama suhteutuu vapaasti sallittuun kesyrottaan. Jos pitaminen on kielletty, pyydan tietoa siita, miten asian voisi vieda maa- ja metsatalousministeriolle, joka koordinoi lakia ja kansallista luetteloa.

Kiitan vaivannaostanne.

[Nimi]
[Paikkakunta]
[Sahkoposti]

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