A Greenwich police officer and the K-9 partner he worked with for eight years are not letting retirement keep them apart.

K-9 officer Tyro recently hung up his police collar, but his former partner, Officer Mike Macchia, decided to continue their friendship by making him a part of his family. Officer Macchia says the bond between him and Tyro is like nothing he has ever had with another dog. He says they have been buddies through thick and thin for eight long years and that they unconditionally trust each other.

Macchia says that since Tyro's retirement, he's been taking some extra days off work to try and help his highly trained and motivated dog transition from a life on the job. He says he's working with Tyro to make every day feel like a Saturday, which is a challenge for the energetic 90-pound German shepherd.

Officer Macchia tells News 12 that the Greenwich Police Department will start training Tyro's replacement this winter. The new K-9 will likely be introduced to the force sometime next spring.