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
Concentrated animal feeding operation Concentrated animal feeding operation A concentrated animal feeding operation (CAFO), as defined by the United States Department of Agriculture (USDA) is an animal feeding operation (AFO)—a farm in which animals are raised in confinement—that has over 1000 "animal units" confined for over 45 days a year. An animal unit is an animal equivalent of 1000 pounds live weight. A thousand animal units equates to 1000 head of beef cattle, 700 dairy cows, 2500 swine weighing more than 55 lbs, 125 thousand broiler chickens, or 82 thousand laying hens or pullets. A CAFO is also an animal feeding operation of any