A zoo in Bedfordshire which is using night-vision technology to monitor its Asian elephant herd has said the footage is vital to protecting the endangered species in the wild.
Whipsnade Zoo, near Dunstable, has released night-vision footage of the herd, showing 11-month-old Nang Phaya crawling over her aunties Lucha, 41, and Karishma, 24, appearing to entice them to play while they attempt to sleep.
