Pet Rules in Mount Rainier, MD and Prince George's County

One walk, two sets of rules

Mount Rainier is a small town in Prince George's County, Maryland, where Rhode Island Avenue NE (Route 1) leaves DC. Plenty of households here walk a dog into Woodridge or Brookland, work in DC, or use DC parks. The rules change at the line, and so does the agency you call.

Three layers apply on the Maryland side: state rules on rabies, the Prince George's County Animal Control ordinance (Subtitle 3 of the County Code), and the City of Mount Rainier's own code. This guide sticks to what those official pages say and points out where DC differs. Rules change, so check the county or city page before you act.

Licensing your pet in Prince George's County

The county's Animal Services Division quotes its Animal Control Ordinance: "a ferret, dog or cat which is 4 months of age or older shall be licensed by the owner" (Section 3-145). The county says a license must be obtained within 30 days after residency is established. Unlike DC, the county licenses cats and ferrets as well as dogs.

To apply, the county asks for a copy of your pet's current rabies vaccination certificate and, if it applies, a copy of the spay or neuter certificate. You can apply online, print and mail the form, or buy a license in person at the Animal Services Division in Upper Marlboro (the county lists 301-780-7200, option 8, for licensing). A yearly fee applies, lower for spayed or neutered pets; the county's Animal Licensing page lists current fees and a free-license option for owners 65 and older who apply in person.

Two county rules may surprise newcomers. Anyone keeping five or more animals larger than a guinea pig over four months old needs an Animal Hobby Permit, and each animal still needs its own license. And under a county council bill effective February 2, 2026, owners of the terrier breeds the county defines as pit bull terriers must register and be approved for a permit before licensing, with proof of rabies vaccination, a microchip and spaying or neutering, among other steps.

Maryland's rabies rule

Maryland's rabies regulation, COMAR 10.06.02.10, says an owner or custodian of a dog, cat or ferret "shall have that animal adequately vaccinated against rabies by the time the dog, cat, or ferret is 4 months old." The same rule bars animal control from licensing a pet without checking a current rabies certificate, and it says you must show the certificate to police, animal control or health officials if they ask.

The county's rabies page says rabies in this area is most likely to be seen in raccoons, foxes, skunks, bats, and dogs and cats that are not vaccinated. Its prevention advice includes keeping your pet's rabies shots current, walking your pet on a leash, not leaving your pet outside unattended, and keeping trash cans closed so wild animals are not drawn in. Your vet can tell you when your pet's next rabies shot is due.

Leashes and pet waste in Mount Rainier

The City of Mount Rainier reminded residents in 2024 that Section 14-103 of its code allows no dog in public areas, including streets, sidewalks, roadways and alleys, without a leash or lead no longer than six feet, held by a person able to handle the dog at all times. The city lists its Code Compliance office at 301-458-5103 and accepts complaints online.

On waste, the city's Public Works page says responsible pet owners must pick up after their pets, and it explains that pet waste left on the ground can wash into waterways such as the Anacostia River. The city keeps pet waste stations around town, including these spots it lists:

• The skate park between Otis Street and Wells Avenue
• Perry Street and Rhode Island Avenue
• 33rd Street and Bunker Hill Road
• The 31st Street Mini Park (Mount Rainier Food Forest)
• Arundel Road and 30th Street

Lost pets and bites on the Maryland side

If your pet goes missing in Mount Rainier, Prince George's County Animal Services asks you to call 301-780-7200 and select option 1, the same line it lists for found pets, strays, bites and animal emergencies. It also suggests visiting the county shelter from time to time with a photo of your pet. Our guide comparing microchips, ID tags and licenses explains how each kind of ID helps a finder reach you.

If a person is bitten, the county's rabies page says to seek medical treatment right away and to report the bite to the Prince George's County Police Department at 301-352-1200 and the Health Department at 301-583-3750. If your own pet is bitten or bites, call your vet as well.

Crossing into DC, and getting help close to home

Once you step onto the DC side of the line, DC rules apply: a leash no longer than six feet, immediate pickup, and off-leash play only in a DC dog park. Our DC leash and dog waste rules guide covers those. DC's dog park rules call for a DC registration tag and a DC dog park tag, so if you live in Mount Rainier, check with DC Health before you take your dog to a DC dog park. DC residents should use our guide to licensing a dog in DC.

Danny's Pet Care covers Mount Rainier, just over the DC line from our Woodridge office. Our Mount Rainier page lists what we offer there, our post on puppy walking in Edgewood and Mount Rainier explains short, gentle walks for young dogs, and our post on cat sitting in Mount Rainier covers in-home visits. A license, rabies certificate and your vet's details are worth having on hand before any sitter starts; our dog walking service page explains how walks work.