According to a report in Hindustan Times, a 20 year old hippopotamus killed a cleaner at Lucknow zoo, when the cleaner went to clean the enclosure. The cleaner Suraj Dhanuk was a contract employee and the zoo keeper had a narrow escape, jumping over the walls.
Usually the hippos are locked in the far end of the zoo , when the cleaner goes to clean their enclosure.
However, allegedly the hippos were not locked up properly, and attacked the cleaner
Though the attacked cleaner was taken to the hospital immediately he was declared dead.
The hippo was transferred to lucknow zoo from kanpur zoo.
Hippos are some of the largest land animals at present.

According to media reports the donkey population in india is declining rapidly.
The population of donkeys in india has declined from more than 3 lakh in 2012 to approximately 1.2 lakh in 2019.
The rapid decline is allegedly due to the reduced demand for donkeys with vehicles replacing donkeys
Donkey meat and skin remain in demand.
In contrast the population of other livestock like cows, goats has increased.