Surabaya Zoo performed on the animals found plastic and wood inside the animals. The death of Melani the tiger, one of only a few hundred Sumatran tigers left in the world, outraged animal activists when it was discovered that the tiger was suffering from extreme digestive disorders before being rescued from the zoo. On 28 January 2014 Surabaya Zoo authority announced that the zoo has a collection of 3,459 animals from 197 species, but 81 animals are sick, disabled, and old, and 44 of which are in severe conditions. An online petition that calls for the closure of Surabaya Zoo due to
Hip replacement (animal) condition, since they are irreversible and carry risk. Conditions such as hip dysplasia and arthritis can often be treated with appropriate medications that help the body handle pain, inflammation, or joint wear and tear. Animals which are prospective candidates for hip replacement should have no other spinal, neural, or rear leg abnormalities, in order to be significantly helped by a hip joint procedure. Since the reduced joint mobility seen in conditions such as dysplasia may result in loss of muscle mass and quality as a dog ages, there is often an advantage in having hip replacement whilst the dog is