Award-winning British wildlife photographer Paul Goldstein took this picture in the Masai Mara, Kenya. He explains: 'This may well be my favourite ever wildlife moment. So many contributory factors are involved here. There was a lion patrolling below which is why the leopard was up the tree in the rain. Normally they are not on clear branches and they are just so damn elusive. I was thinking it would just be a nice silhouette as I was convinced the storm had blanked out any available light but at the last gasp it shone through violently so I drove round the other side to catch it bathed in light only East Africa and especially the Mara give you. When I saw the rainbow I gasped. I was still shaking when I drove the short commute back to camp'