The Merrimack River Feline Rescue Society’s Catmobile Program is a subsidized mobile spay/neuter clinic designed specifically for cats. Our two Catmobiles are each staffed by a veterinarian and technician, and can assist up to 30 cats a day.


The Catmobile  program covers the North Shore, South Shore, Central MA, Metrowest, Merrimack River Valley, and greater Boston areas.


Our package includes a brief exam, spay/neuter, rabies vaccination for cats over 12 weeks of age (weighing 1.5kg/3.3 lbs.), FVRCP vaccination, and a nail trim.


Click here to view the upcoming Catmobile schedule,

then book your appointment by phone or online.

Spay/neuter surgeries are by appointment only.


Contact our scheduling office today!

The Catmobile Call Center is open Monday through Friday from 10 AM – 2 PM.

(978) 465-1940

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Important Information


All cats should be at least eight weeks old. For the safety of your cat, we strongly recommend pre-operative bloodwork ahead of time (at your own veterinarian) for any cat over 2 years of age. This bloodwork cannot be done on the Catmobile. While we will book cats over the age of 3 years on the Catmobile, please be aware that our veterinarians reserve the right to turn cats over 3 away on the day of surgery if they have concerns about the cats’ health. Our vet will make that assessment once she sees the cat the day of surgery.


We are unable to accommodate the following breeds due to health concerns: Bengal, Abyssinian, Somali, Persian, Himalayan, Egyptian Mau, Maine Coon, Ragdoll, Savannah, Sphinx & other hairless breeds. Please note that our veterinarians reserve the right to turn away mixed-breeds of these cats as well. This is for the safety of your cat.




CHELSEA RESIDENTS: Spay/neuter packages are FREE for owned cats!

All packages include a brief exam, spay or neuter, rabies vaccine, FVRCP vaccine, and nail trim
Check our Facebook page for more specials!
Limited space available. All feral cats are ear-tipped. Please call or email for more information.



Microchip: $15
Flea Treatment: $15
Please note that we have now instituted a $60 fee for late pick-ups. This fee is not negotiable and we are not able to be flexible with lateness due to our tight schedule. We apologize for any inconvenience; please help us out by being on time for both drop-off and pick-up!


If your cat is not already up to date on vaccinations, he’ll receive a one-year rabies vaccination and a FVRCP (“distemper”) vaccination during his appointment. Even though he’ll get a distemper vaccination that day, we strongly recommend that your cat receive an FVRCP (“distemper”) vaccination at least 48 hours prior to their visit to the Catmobile (and ideally that they have a full FVRCP “series” on board first). You can get an initial distemper vaccine through a vet’s office or at a low-cost vaccine clinic like Vetco (located inside many Petco stores). The vaccination is a series of two or three shots, depending on your cat’s age, usually given 3 to 4 weeks apart. If you get your initial vaccine prior to your appointment, you may be able to get your 1 year booster at your Catmobile appointment, depending on whether the vet determines your cat is eligible. The distemper vaccine helps protect your cat against three diseases they could be exposed to when in close proximity to other cats, two of which can be deadly. All cats are kept separate from each other on the Catmobile, but we have no way of knowing whether another cat on the vehicle that day might be carrying distemper, so it is in your cat’s best interest to be vaccinated before being around other cats during a Catmobile appointment.
We also strongly recommend that all cats visiting the Catmobile receive good flea treatment (Frontline, Advantage – available at retail outlets; Activyl, Revolution, other – available at vets’ offices) on or around the date of their Catmobile visit! Individually packaged take-home flea treatment is available for purchase the day of your appointment for $15/dose.
Download these important forms and instructions before your appointment:
Surgical Consent Form
Pre-Surgical Guidelines
Catmobile FAQs
Post-Operative Instructions


Make a donation — get the Catmobile an item from our wish list
Check out our Catmobile PSA — and listen for us on the radio!

With thanks to the following groups for grants supporting the Catmobile:




Lost Pet USA





With thanks to our Catmobile sponsors: