Maneki, who has been at the park since late 2018 and "quickly stole the hearts of all who cared for her", was sadly put down after an "an inoperable and terminal illness", the park said on social media late on Friday afternoon.

"It is with heavy hearts and deep sadness that (director) Greg Parker, his family and our animal carer team made the difficult decision yesterday to say goodbye to our beautiful Sumatran Tiger, Maneki," the post said.

"A huge thankyou and big hug to all those who cared for Maneki during her time at the Ballarat Wildlife Park.

"Our thoughts are also with her carers at Australia Zoo where Maneki previously lived.

"Whilst Sumatran tigers often lead solitary lives in the wild, our caring team will focus extra time and attention to support our male, Satu, as he adjusts to this change.

"Maneki was surrounded by those who loved her."

A multi-million dollar enclosure was built for the beautiful big cat, then aged 11, before she arrived from Australia Zoo on the Sunshine Coast in Queensland, almost 2000km away in December 2018.

"She was truly a beloved member of our Wildlife family and will be remembered fondly and greatly missed," the Ballarat Wildlife Park said.

More information on Maneki is available here.

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