A female Malayan tiger at the Houston Zoo in the US has died on 29 July
Having lived a long life of 18 years, 'Satu' had to be humanely euthanised after her quality of life started to decline
According to a statement by the zoo, 'Satu' had developed arthritis in some of her joints.
Because of this, zookeepers provided her with daily stretching, monthly laser acupuncture sessions, and multiple therapy sessions to provide pain relief and promote joint health.
Malayan tigers have an average life expectancy of eight to 12 years, but 'Satu' was able to live until 18 years old under the attentive care of Houston Zoo.
In addition to care within the compound, the zoo also funds the protection of wild tigers in Asia
According to the World Wide Fund (WWF), Malayan tigers are listed as Critically Endangered in the IUCN Red List of Threatened Species