Are Roof Rats Legal in Rhode Island? Keeping, Breeding & Selling

• Rhode Island DEM (its Supervising Wildlife Biologist, Division of Fish & Wildlife) confirmed in writing on 15 June 2026 that the Division would consider adding the roof rat (Rattus rattus) to the list of exempt species the next time that regulation section is opened.
• DEM also confirmed the selling rules: a pet shop license is required to sell at retail and a dealer license to sell at wholesale; the only home-breeder exemption is for dog and cat breeders who sell no more than two litters per year, so it does not cover rodents.

Keeping / owning   Legal with a permit

Confidence: High · Last verified 2026-06-08

R. rattus is not on RI’s ‘domestic animal’ list or Appendix A exempt list (which name only R. norvegicus), so by default it’s an ‘Exotic Wild Animal’ (250-RICR-40-05-3.6(A)(8)). Rodents are not in the flat-prohibited class (wild carnivores w/o rabies vaccine, primates), so possession is permissible WITH a DEM Exotic Animal Possession Permit: $5 per specimen (one application per animal), a RI-licensed veterinarian’s commitment letter, and a DEM-approved written husbandry plan secured BEFORE the permit issues; plus escape/death reporting and possible unannounced inspections (DEM has discretion to deny). Keeping without the permit = ‘contraband’ (seizure). The Norway rat needs none of this, the disparity is the advocacy point.

Sources: RI Dept of Environmental Management, RI DEM (via Cornell LII), RI DEM Division of Agriculture, Rhode Island General Assembly

Breeding   Legal with a permit

Confidence: Medium · Last verified 2026-06-08

Breeding requires the Exotic Animal Possession Permit to legally hold the parent animals; commercial propagation for sale additionally requires a Pet Shop License (retail) or Dealer License (wholesale). Critically, RI’s coveted ‘hobby breeder’ exemption (R.I. Gen. Laws §4-19-2) is restricted to DOGS AND CATS, there is no hobby exemption for rodents, so even small-scale home breeding of R. rattus for sale is treated as operating a Pet Shop. (Open: whether DEM requires a separate $5 possession application for each unweaned pup before transfer, see inquiry.)

Sources: RI Dept of Environmental Management, Rhode Island General Assembly, RI DEM Division of Agriculture

Selling or giving away   Legal with a permit

Confidence: High · Last verified 2026-06-15

Commercial RETAIL sale to the public requires a Pet Shop License ($100/yr); WHOLESALE requires a Dealer License, the rodent seller can’t use the dog/cat hobby exemption (§4-19-2). Even private, non-commercial transfer requires DEM authorization, and the RECIPIENT must independently obtain their own Exotic Animal Possession Permit before taking custody (permits are non-transferable). A pet shop in good standing can hold a species-level ‘resale permit’ (250-RICR-40-05-3.8) instead of per-animal permits, but the buyer still needs their own. CONFIRMED 2026-06-15 by RI DEM’s Division of Fish & Wildlife: retail sale needs a pet shop license and wholesale needs a dealer license; the only home-breeder exemption is for dog and cat breeders selling no more than two litters per year, so it does not cover rodents.

Sources: Rhode Island General Assembly, RI Dept of Environmental Management, RI DEM Division of Agriculture

Transport & import   Legal with a permit

Confidence: High · Last verified 2026-06-08

IMPORT: you cannot just drive a roof rat into RI, the Exotic Animal Possession Permit application must reach DEM at least 7 days before shipment, accompanied by a Certificate of Veterinary Inspection from a federally-accredited vet in the origin state, COUNTER-SIGNED by the origin State Veterinarian, declaring freedom from infectious/zoonotic disease; DEM approves the point of entry and may impose case-by-case quarantine (R.I. Gen. Laws ch. 4-18). INTRASTATE: the permit is tied to the inspected/approved location and is non-transferable, so even moving the animal to a new RI address needs DEM written permission. Never release (escape must be reported immediately).

Sources: Rhode Island General Assembly, RI Dept of Environmental Management

• Line up a RI-licensed vet willing to give a commitment letter for ongoing DEM-required testing
• Write a husbandry plan (enclosure/diet/enrichment) for DEM approval
• File an Exotic Animal Possession Permit application ($5/animal) via the DAFE portal, ≥7 days before any import, with a counter-signed CVI

Forms: Exotic Animal Possession Permit Application · Where: RI DEM, Division of Agriculture & Forest Environment (DAFE) Permit Portal · Fees: $5 per animal (possession); $100/yr Pet Shop License (to sell)

Source: RI DEM Division of Agriculture, RI Dept of Environmental Management

• For any sale/commercial breeding: obtain a Pet Shop License (retail) or Dealer License (wholesale) from DEM

Forms: Pet Shop License Application · Where: RI DEM, DAFE · Fees: $100/yr (Pet Shop)

Source: Rhode Island General Assembly, RI DEM Division of Agriculture

In Rhode Island, keeping a pet roof rat (Rattus rattus) is legal but burdensome, while keeping the common “fancy rat” (the Norway rat, Rattus norvegicus) is not regulated at all. The reason is wording, not biology. The state’s wild-animal rules (250-RICR-40-05-3) name only the Norway rat as a “domestic animal” and put only the Norway rat on the Appendix A list of exempt animals. Because the regulation names one rat and is silent on the other, the captive-bred roof rat falls by default into the catch-all “Exotic Wild Animal” category. That triggers a DEM Exotic Animal Possession Permit: $5 per animal, a Rhode Island-licensed veterinarian’s commitment letter, and a DEM-approved written husbandry plan before legal ownership, plus escape/death reporting and possible inspections. Two tame, captive-bred rats of nearly identical care needs are treated differently solely because of which species the list mentions.

The ask: GOOD NEWS FIRST: RI DEM’s Division of Fish & Wildlife has already confirmed in writing (June 2026) that it would consider adding the roof rat to the Appendix A exempt list the next time this regulation section is opened, so this is a receptive agency, not a fight. The ask is to make that happen: request that DEM add the captive-bred, domesticated roof rat (Rattus rattus) to the Appendix A list of exempt animals in 250-RICR-40-05-3.17, so it is treated the same as the already-exempt Norway rat (Rattus norvegicus). This is a regulatory fix DEM can make through its normal rulemaking; it does not require a new law. The relevant fact is domestication, not wild ancestry: the dog descends from the wolf and the house cat from a wild felid, yet both are recognized as domestic, and the already-exempt Norway rat is itself the wild brown rat domesticated only in the 19th century, so a captive-bred R. rattus is the same case one species over. Point to New Jersey (exempts the whole genus) and Wyoming (names both rat species) as precedent. Because the change happens when DEM next opens this Part, subscribe to the Secretary of State’s rulemaking notices to catch the public-comment window, and send DEM a short written request now so it is on record for the next cycle. On domestication background, see https://blonderoofrat.com/how-the-sewer-rat-became-the-fancy-rat/ .

Where the lever really is: This is an agency problem, and the lever is the agency (DEM), not the legislature. The roof rat is not named on any statutory prohibited list. It falls into the “Exotic Wild Animal” default because DEM’s own regulation, 250-RICR-40-05-3, names only Rattus norvegicus as exempt (in the definitions and on the Appendix A list at 3.17) and is silent on Rattus rattus. Appendix A is a DEM-controlled regulatory list, not a fixed item in the General Laws, so DEM has authority to amend it through ordinary rulemaking. In the 2026 cycle (notice filed 04/13/2026, comment period through 05/20/2026, hearing mid-May) DEM proposed and processed amendments to this Part, banning tegus and giant African land snails and clarifying dealer exemptions, which shows the agency routinely revises this list. The right move is a written request or administrative petition to DEM’s Division of Fish & Wildlife (the unit that authors Appendix A) to add captive-bred R. rattus to the exempt list, reinforced by participating in DEM’s annual public-comment window for this Part. Going to the General Assembly would be the wrong door, because there is no statute banning the roof rat to repeal; the fix lives in a regulation DEM writes and can change. If DEM declines on invasive or structural-pest grounds, that is a policy judgment to address via the comment record, not a sign the lever was wrong.

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

• RI DEM, Division of Fish & Wildlife (general division inbox) (executive / agency), DEM.DFW@dem.ri.gov
  This is the DEM division that authors and maintains the Appendix A exempt-animal list in 250-RICR-40-05-3. Send the request here to add captive-bred Rattus rattus to the exempt list. Verified as the official, non-personal division inbox on DEM’s live Fish & Wildlife page (phone 401-789-0281).
• RI DEM, Division of Agriculture & Forest Environment (DAFE) Permit Portal (executive / agency), official contact page
  The official portal for filing the Exotic Animal Possession Permit (and Pet Shop/Dealer licenses) that a roof-rat keeper currently needs while the rule stands. Use it both to comply today and as the formal contact point for permit questions about the species.
• RI Secretary of State, Rulemaking notice subscription (public comment), official contact page
  The official statewide system to be notified the moment DEM opens its next public-comment window on 250-RICR-40-05-3. DEM amends this Part on roughly an annual cycle (it did so in 2026), so subscribing lets you submit a formal comment supporting the roof-rat exemption when the window reopens.

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

To the Rhode Island Department of Environmental Management, Division of Fish & Wildlife:

I am writing to ask DEM to add the captive-bred, domesticated roof rat (Rattus rattus) to the Appendix A list of exempt animals in 250-RICR-40-05-3.17.

Under the current rule, the closely related Norway rat (Rattus norvegicus) is named as a domestic animal and listed as exempt, but the roof rat is not mentioned. Because of that silence, a tame pet roof rat defaults into the "Exotic Wild Animal" category and requires a possession permit, a veterinarian's commitment letter, and an approved husbandry plan, while an essentially identical pet Norway rat requires nothing. This difference comes from which species the list names, not from any difference in the animals.

The roof rats kept as pets are captive-bred, hand-tamed, housed indoors in secure cages, and never released to the wild. They are kept the same way as the fancy rats already exempt under your rule. What makes an animal domestic is its breeding history, not its wild origins. The dog descends from the wolf and the house cat from a wild felid, yet both are recognized as domestic animals because of generations bred for tameness. The exempt Norway rat is itself the wild brown rat, domesticated only in the 19th century, so a captive-bred roof rat is the same case one species over. New Jersey exempts the entire genus and Wyoming names both rat species, so there is precedent for harmonizing the two.

I respectfully ask the Division to add captive-bred Rattus rattus to the Appendix A exempt list, or to advise how I may petition for that amendment and when the next public-comment period on this Part will open.

Thank you for your time and consideration.

[Your name]
[Your town, Rhode Island]
[Your email]

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