Over 300 animals died in the National Zoological Park in the national capital during 2016-17, the Lok Sabha was informed on Tuesday.
Union Environment Minister Harsh Vardhan said in a written reply that some of the animals which died included black buck, Indian Gazelle, monitor lizard, emu, spotted deer and others.
"In last one year (2016-17), total mortality of animals in the National Zoological Park at Delhi is 325," he said.
He was asked whether the zoo had recorded the highest mortality in the last one year.
Vardhan said many reasons including shock, tuberculosis, traumatic shock, senility among others, were behind the animal deaths.
Recently while replying to a question in the Lok Sabha, the minister had said that heat stroke and cold triggered by extreme weather conditions had killed 24 animals in various zoos of the country in 2016-17.