by Admin on February 4, 2014

The Callahan Dog Owners Group is an organization of canine-loving humans who mobilized in response to a proposal by the Massachusetts Department of Conservation and Recreation to limit off-leash privileges within the 800-plus acres that comprise Callahan State Park.

We remain committed to efforts to retain our hard-won off-leash status in designated areas of the park (see map of Callahan trails, including highlighted on-leash trails); to representing and upholding – as well as enlightening and reminding – appropriate standards of responsible dog ownership; to the preservation, protection and promotion of the pristine nature of the park, and to camaraderie with and respect for each other and all the many varied multi-use neighbors who share its bounty. Check out the About Us page for more detailed information on our history, our passion, our efforts and our accomplishments.

With off-leash freedom comes responsibility. Please be a responsible dog owner/walker. The existing signs on Callahan’s trails are misleading. These are the facts:

  • On-leash: (1) Dogs are to be leashed in all parking areas and on all trails that abut private property. Dogs must not enter private property – ever! (2) Dogs are to be leashed on the Millwood Street-side walking loop that includes the length of the earthen dam, around the home-abutting trails of CocoRidge and Pinecone, to and including Fox Hunt, and back again to earthen dam (see map); (3) Dogs are to be leashed – even if on an off-leash trail – if and whenever any park visitor requests that you leash your dog until you have safely passed.
  • Off-leash: romping is permitted on most interior trails and in the Eagle Pond area.
  • Voice Control: Off-leash dogs must be supervised and under strict voice control.
  • Scoop the Poop: Pick up after your dog and discard the poop bag in a trash barrel (located in all parking lots year round, and at Eagle Pond in the summer months). Do not leave poop bags behind on trails, in the woods, at Eagle Pond, or…anywhere!

Spring Newsletter

by Admin on April 22, 2017

Hello All!

Happy Spring!! Looks like it has finally arrived with all this rain!

We have a few items to let you know about.

First, our annual Park Serve Day with DCR is scheduled for Saturday April 29th. Callahan is in desperate need of a clean up! Thank you to all our individual members who have taken time to do their own clean ups over the winter. We hope to see many of you out for Park Serve Day later this month.

Secondly, we are having an open meeting for all members next Tuesday April 11 at 7:30 at the McAuliffe Branch Library at 746 Water St. On the agenda that evening will be discussion of clean up days and the on/off leash signage as well as any suggestions from members about activities for the group. We are also hoping to find some motivated members to take over the social media for CalDog. We desperately need someone with some knowhow to take over and bring us into the 21st century! Please rsvp if you can make this meeting.

Lastly we have a new Facebook group that we hope will help create more community among our members. Please join here:


Hoping to see many of you at the meeting and Park Serve Day!

Stay dry out there!

Fall Newsletter

by Admin on November 11, 2016

Hello All!

I hope you are all enjoying the fall weather that has finally arrived!! It’s been beautiful hiking at the park!

1. Found Wedding Band!!

A man’s wedding band was found in the Edmands lot at the end of Sept. It has an inscription inside.  If you or anyone you know is missing it, please have them contact us. We would love to reunite it with it’s owner.

2.  Park Clean Up/Volunteers Needed!!

As many of you have probably noticed, our park is looking a little worse for wear. And we’re not the only ones noticing. DCR notified us recently that they’ve had several complaints about the amount of dog poop on trails as well as dogs off leash in on leash designated locations. As we all know, of DCR receives too many complaints about off leash dogs, it puts our off leash privileges in jeopardy. We would hate for Callahan to become an on leash only park because people didn’t follow the rules.
As a good faith effort, we are scheduling this clean up day to show DCR that we continue to be a responsible group and that we care enough about the park and don’t want to lose it or our off leash privileges. Clean up will be Saturday November 5th from 10 am – 12 pm.

We would love to have volunteers at both the Millwood and Edmands entrances. Additionally we have some new signs that will be going up throughout the park and are looking for volunteers to help with that as well. The signs will hopefully help with confusion about where the on leash vs off leash trails are.
If you can help please RSVP to callahandogs@gmail.com and let us know how you would like to help!

Happy Trails & Be Kind

Dogs Need Your Help

by Admin on June 8, 2016

Hello All!

Puppy Bit – Need Rabies Info!!
Yesterday evening Hadley, a young black lab mix, was bit by a German Shepherd named Moose near Eagle Pond. Unfortunately in the midst of the commotion, Hadley’s owners were unable to get Moose’s owners information and most importantly his rabies vaccination status. Without proof of vaccination for Moose, Hadley will need to be quarantined for 45 days. She is a new rescue and her parents were hoping to enroll her in puppy classes ASAP. If you are or know Moose’s owner, please contact us so that we may put in touch with Hadley’s owners. They are only looking for the proof of rabies vaccination so that Hadley does not need to be quarantined! Please email callahandogs@gmail.com with any helpful information! Thank you!!

Cosmo Sightings!
There has been another possible sighting of Cosmo! On Monday 6/6, a woman saw a brown dog without owner on Rocky Rd in the south part of Callahan. This is the second sighting in as many weeks within Callahan. Please be on the lookout for Cosmo. If you see him please call Mary or Rich (phone numbers on attached flyer) or email us here and we will pass along the sighting. Do not try to approach Cosmo or call out to him. He is most likely in survival mode at this point and we want to keep him in the area and not scare him off!

Otter Update
Lastly, in case you haven’t already heard, there is an aggressive otter at Eagle Pond. She (speculation is she is a mama guarding her young) has bit three dogs in the last week. Please use caution when allowing your dog to swim at Eagle Pond. There have not been any reports of the otter since last Thursday but still best to exercise caution.

Thank you!


Beware of Otter in Eagle Pond

by Admin on June 3, 2016

There is a large otter living in Eagle Pond that has attacked dogs that swam near. She/he is around 40 pounds and is living on the small rock island in the left part of the pond. Please exercise caution in allowing your dogs to swim in the pond.

Park Serve Day

by Admin on April 24, 2016

Hello All!

First a quick word of warning! As many of you have probably already heard, two cars were broken into last Friday afternoon between 3:30 and 4:30 in the Millwood parking lot. Please don’t leave valuables in your car when at the park or try to put them in the trunk or out of sight if there is no other option!

It’s finally beginning to feel a bit like Spring out there! As most of you have probably noticed, the park is in need of some love and attention. Luckily we’re partnering with DCR once again this year for their annual Park Serve Day in conjunction with Earth Day. This year’s service day is Saturday April 30th from 10:00 am – 12:00 pm. We’re hoping to see many of you there to once again get Callahan into tip top shape! As most of you know, our off leash privileges are dependent upon everyone chipping in and doing our best to keep the park free of poop.

In addition to asking for volunteers to help with the clean up, we are also hoping to get some people who are interested in standing at the entrances and handing out bags, gloves and clean up shovels. We are looking for one hour shifts ideally but will take whatever you can offer! If this interests you, please respond to this email with your availability. We’re always looking for new members who would like to be more involved!!

Sean, the park ranger assigned to Callahan by DCR, will be back full time beginning April 24th. Make sure to say hi if you see him! He’ll be doing general park maintenance and checking in that we’re holding up our end of the bargain in terms of leashing our dogs where required and picking up after them. On this note, both we and DCR have had SEVERAL complaints about dogs being off leash in the parking lots and on the ridge. Please remember and nicely remind others of the leash rules. And again, an electric remote collar DOES NOT substitute for a leash. If it’s an on leash trail, your dog must be on a physical leash.

Happy Trails! Enjoy this beautiful long weekend!

Happy New Year

by Admin on January 12, 2016

Happy New Year!!

Every year once the cold weather sets in and the snow starts to fall, we begin to see another unwelcome sign of winter … Poopsicles. For one reason or another, once winter arrives the park becomes even more littered with dog waste than previously.

We’ve had several complaints about the state of the park in the last couple of months so it is time to be proactive and get cleaning!!

Please meet us at the Millwood entrance on Sunday January 17 between 10 and 12. We’ll provide poop bags, shovels, and trash bags. Additionally there will be coffee and snacks to keep you warm while you work.

We are also looking for a couple of volunteers to hang out at the entrance and Eagle Pond to explain to visitors what we are doing and what the group is all about. Please email us if you are interested in volunteering.

Please RSVP if you plan to join us for clean up!


Don’t forget that you can follow us on Facebook and Twitter for photos and more frequent updates including missing and found dog updates.

2016 CalDog Calendars

by Admin on December 13, 2015

Hello All!!

We are very excited to announce that the 2016 calendars are here!

Our cover dog (photo attached) was chosen from one of the four seasonal winners by our board members. Zoe and her owner Nancy are our cover girls! Congrats!!

The remaining three seasonal winners each received their own month in the calendar and the other months were made up from submitted photos. We did our best to include all the photos that were submitted but some did not make it in due to size or quality (pixels) of the image.

The calendars are available for purchase at Especially for Pets in Wayland and Sudbury. They are $15 each and the profits go towards our work in maintaining and supporting the off leash privileges at Callahan. You will need to pay in cash for the calendars.

Don’t forget that you can get more frequent updates and see photos of all the dogs on our Facebook page: Callahan Dog Owners Group
We’re also on Twitter: @callahandogs

Happy Holidays!!



by Admin on November 24, 2015

Hello All!

We just confirmed with Muggles’ owners. Muggles is HOME!!!

Thanks to everyone who shared his picture and was out looking for him.

From his owner:
Muggles is home safe and sound. He actually walked almost all the way home and was picked up and kept safe by a neighbor. Thanks for all your help!

Lost Dog Update

by Admin on November 23, 2015

Hello All!

Muggles, the 4 month old puppy who went missing from Callahan yesterday afternoon, has still not been found. If you are out and about in the park today, please keep and eye and an ear out for him. He is wearing a yellow collar without tags and he is microchipped! Please call Aileen at 413-531-6109 with any sightings or information.

Thanks you!!

Lost Dog

November 23, 2015

ALERT!! Muggles, a 4 month old black fluff ball puppy (photo attached) went missing at Callahan this afternoon at approximately 1 pm and is still missing. He was last seen on the pipeline near the top of Rocky Road. He is wearing a yellow collar but no tags. He is microchipped. He is very small. […]

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