Miley Cyrus has broken down on stage during a performance following the death of her beloved pet dog.

The singer is currently mourning the loss of Alaskan Klee Kai, Floyd who recently died and was paying tribute to him by performing “Landslide” by Fleetwood Mac.

'My dog who is - I shouldn't say he was my favourite - but he was my favourite, he passed away," she told the audience.

"I just wanted to do this song for him because we used to always listen to Fleetwood Mac together and this was his favourite song."

Cyrus apologised to the audience in advance before she performed, explaining that she may not be herself during the performance and was later comforted by her sister Noah..

“I'm sorry in advance if I am not myself tomorrow Boston. I will try my best to be my best,” she wrote on her Twitter page.

“I know I don't mean it but I wish he would've taken me with him this is unbearable. What am I gonna do without him?

“What you don't understand is he's not in a better place the best place he could be was with me... where he was loved more than anything.”