Suits star Patrick J. Adams has penned a “heartbreaking” note to his “dear friend Charlie.”

Patrick’s “dearest” pet, Charlie, passed away on Saturday, leaving him and his family in agony.

Charlie survived two rattlesnake bites, three major leg operations, a mini stroke, seizures, over 25 international flights.

The Swearing Jar actor dropped a picture of his pet on Instagram and wrote a lengthy note to honor him.

He begins the tribute post with, “You know it's coming and the knowing makes no difference at all. At 1:47pm we said goodbye to Charlie. 17 years old. All this time I thought I was walking him but he was walking me. Through it all. Unemployment. Employment. Heartbreak. Falling in love. Suits. Marriage. Unemployment again. Two children. A lot of struggle.”

Patrick added, “A lot of fear. A lot of joy. A lot of doubt. He was there for every single step of it reminding me that I wasn't alone and that he needed to poop. He survived two rattlesnake bites, three major leg operations, a mini stroke, seizures, over 25 international flights, two toddlers and congenital heart failure and he still didn't want to go. But one morning you wake up and the legs just don't work and the water bowl is unmanageable and as heartbreaking as it is the time has come.”

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At the end of the note he thanked everyone who showed Charlie some love and snuck him a “treat over the years.”

The renowned star shared that his late pet had a bit of an attitude but a big heart “and you were all a part of it.”