New research has found elephants living in zoos enjoy visits from humans.
Animal behaviour experts, at Nottingham Trent and Harper Adams Universities, studied more than 100 previous papers about how visitors affect more than 250 different species in zoos.
The study found elephants socialised more with each other during public feeding times while after public feeding times, they were more likely to forage and less likely to be inactive.
Penguins, jaguars and grizzly bears were also among the zoo animals that enjoy having visitors and actually benefit from seeing people.
The research examined a number of species - finding some were less bored and more active when they spotted humans.
But some don't cope as well, they include flightless birds, marsupials, and hedgehogs.