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) performed in the medium-large breeds of dogs. An animal suffering from hip dysplasia may have been in some degree of chronic pain all its life from a very young age but mat show no overt sign of pain. Rather, they have adapted to the pain over an extended period, and learned to live with it. As a result in many animals, successful hip replacement is gives animals a level of playfulness and happiness not previously seen. As with all surgeries, results vary, and there is both risk and uncertainty involved. Animal hip replacements are usually made from the same material