Cyrus is credited with being the one to acquire most of the pets in the first place, mainly through adoption.
It was Hemsworth, however, who saved the pets from the Californian wildfires that razed the former couple's Malibu home among hundreds of others and 96,000 acres of land outside of Los Angeles.
Speaking about Hemsworth's heroism on Howard Stern's radio show last year, Cyrus said:
"Liam, I have never loved him more for this. He was so incredible, he got all the animals out in his truck, he got two pigs in crates which I tell you is so hard.
I said how did you get them out and said the only thing I could do was get a really powerful hose and spray them in the a — s."
Hemsworth went to some lengths to corral the creatures, including literally herding cats.
"The cats have never really been outside and he started opening the door trying to get them in and out and one cat just ran away and I'm so glad he didn't just say 'OK you don't know what you are running into' and got them."
Meanwhile, pop royalty Madonna has weighed in following Cyrus' lengthy spiel on social media yesterday.
Cyrus owned a number of her past 'bad' behaviours before saying that she has "grown up".
"I can admit to a lot of things but I refuse to admit that my marriage ended because of cheating," she said.
Madonna commented. "Thank GOD!! You are human! A woman who has lived. No need to apologise!!"
Following their romantic tryst sailing in Italy, Cyrus and new squeeze Kaitlynn Carter appear to be going strong, lunching with Cyrus' mum Tish in Los Angeles and sending Carter's ex Brody Jenner a "weed bouquet" for his birthday.