All 2,500 animals at Whipsnade Zoo in Bedfordshire are being weighed and measured as part of an annual survey.
One of the keepers, Darren Fellows, told ITV News Anglia that they have special scales to weigh the elephants and because the animals response to commands, the task of weighing them is not too difficult.
Click below to watch the interview
More top news
From humble farmhouses to great stately homes and historic churches, East Anglia is littered with buildings falling into ruin.
It will cater for 5,000 students and open in 2023
A dry day across the region with some sunny spells after a frosty start