When faced with a lioness clawing at its flimsy cage, most of us would do a runner. But Valentin Gruener calmly approaches the cage - and lets the beast run wild.

As he begins to unlock the door, Sirga starts pacing up and down and as soon he opens the enclosure, the big cat springs out and pounces on him.

Fortunately, she's just after a big hug and Mr Gruener greets the lioness with a pleasant 'good morning' before rubbing noses with it.

Traveller John Hawkins shot the video at Modisa Wildlife Project near Maun, Botswana.

He said: 'Val is a wildlife conservationist that raised Sirga the lioness almost from birth.

'This guy is exceptionally inspirational. He takes her on game walks and she can even hunt on her own.'

Sirga the lioness greets Val Gruener who raised her from birth at the Modisa Wildlife Project in Botswana

Mr Gruener founded the wildlife project with Mikkel Legarth from Germany after they met while volunteering at a nature reserve in 2009.

The project conserves and protects big cat habitats in partnership with Grassland Safari Lodge.

Mr Gruener said: 'Grassland started their conservation work by capturing lions and other big cats in conflict with farmers to spare them from certain death.'

Come here you big lug! Mr Gruener hugs Sirga the lioness at the wildlife park in Africa

Modisa Wildlife Park also conducts research monitoring the Kalahari eco-system which includes bird and game counts and plant inventories.

Mr Hawkins has been travelling the world since 2008 after setting foot in the Dominican Republic.