Jesse Grant/Getty; Guy Fieri / Twitter Guy Fieri, Cowboy
Guy Fieri and his family mourn the death of their dog Cowboy on January 22, shortly before the Food Network star's 55th birthday.
"Today is a very sad day for the Fieri family," Fieri wrote on Saturday, along with a photo of Butchshaw. “Today we lost our COWBOY. He was kind and brought so much love and energy to our family.
The heartbreaking restaurant post received support from famous friends, including Star Wars legend Mark Hamill, who responded with a heartbroken emoji, and Seinfeld and Dancing with the Stars alum John O'Hurley: "The O'Hurleys share your grief." It's a loss of innocence. God, give him honor in his home."
Related: Guy Fieri's 16-year-old son Ryder grew up at home
Guy Fieri/Twitter – Cowboy
Fieri celebrated his 55th birthday on Sunday, the day after the tragic news of Cowboy's death.
The creator of Guy's Grocery Games posted a video on Instagram showing how he spent his birthday. In the video, Fieri sings "I Can't Drive 55" with Sammy Hagar.
"Best birthday. Wow. Thank you to all my family friends and my older brother, red rocker @sammyhagar. Wow. Amazing," Fieri captioned the video.
For Fiera, her family always comes first, including the four-legged ones.
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"Family always comes first," Guy told PEOPLE magazine in September. “Most of my friends say I haven't changed. I think it's because when I got into TV, I did what I wanted to do. I wanted to be a good father."
Guy Morgan's sister After her death from melanoma in 2011, along with her two sons, Hunter and Ryder, 26, Diners, Drive-In and Dives hostess and wife Laurie helped raise their 23-year-old nephew Jules.
Being a good father to Guy means instilling his strong work ethic in all three men.
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"He always leads by example," Hunter told PEOPLE magazine of his father. “Seeing how much he cares about him and how much effort he puts into fundraising despite the fact that he is always so busy… it was a revelation for me.”