Telling her 4.9 million followers, the mum wrote, "Goodbye Kiss 💔 Frangelica “Nanni” Moore Hart. 2002-2018. Rest in sunshine pretty girl. Thanks for waiting for me to get home 😢"
The tribute was completed with an image of Pink and her loyal pooch.
The 39-year-old received a flurry of messages from fans, friends and loved ones, sharing their condolences.
“This breaks my heart,” Reese Witherspoon wrote, “why don’t they live longer? Sending you [love.]”
Selma Blair penned, “Only love. I am sorry.” Singer Brandi Carlile added: “There’s not much tougher than that. Thinking about you and sending love.”
It certainly has been a tough few months for the singer, who was forced to postpone a series of her Australian shows.
“We were absolutely planning on going ahead with the show, and about 20 minutes before I left for soundcheck, I was rushed to the hospital, in excruciating pain,” Pink explained in an Instagram post at the time. “That was the reason for the late cancellation. It was out of anyone’s control, and of course, wasn’t planned that way. I was discharged from [the] hospital last night, and am following doctors orders of liquids and rest.”
She continued: “A lot of you know how physical my shows are, and that I don’t just stand in front a microphone and sing. I flip, dance, fly, harness, silk, and scream my way through a total shit show of awesomeness (no pun intended). Therefore, I need to be physically healthy and well in order to perform this show. I think all of you deserve the full show and me at my best.”
Thankfully, after weeks of rest, Pink was able to reschedule and wow the country with her talents.