The extraordinary scene was captured by photography student Casey Gutteridge at the Santago Rare Leopard Project in Hertfordshire. ...
No idea where the mouse came from ...
He Just appeared in the enclosure after the keeper had dropped in the meat for the leopard. 
He didn't take any notice of the leopard, just went straight over to the meat and started feeding himself.   But the leopard was pretty surprised - she bent down and sniffed the mouse and flinched a bit like she was scared. In the meantime the mouse just carried on eating like nothing had happened ...
Michel Denis-Huot, who captured these amazing pictures on safari in Kenya 's Masai Mara said he was astounded by what he saw:

"These three cheetah brothers have been living together since they left their mother at about 18 months old,'
he said. 'On the morning we saw them, they seemed not to be hungry,
walking quickly but stopping sometimes to play together. 'At one point,
they met a group of impala who ran away.
But one youngster was not quick enough and the brothers caught it easily'".

These extraordinary scenes followed.