Dogs are welcome at Hammond Pond Reservation in Chestnut Hill, Ma. There are dozens of hiking trails for you and Fido to enjoy together, weaving in and out of the woods surrounding the centerpiece of the park, Hammond Pond. This area is also popular among rock climbers because of the formations of sandstone conglomerate and roxbury puddingstone. Dog owners are reminded to keep their pets on a leash for the duration of their visit and to preserve the park's cleanliness by cleaning up after pets. Hammond Pond Reservation is open every day of the week from sunrise to sunset.