Thank you ddk, img, El Bimmer and BigDog.
BigDog, Most of the images of animals were captured with a Nikon 70-300VR. It has been repaired by Nikon twice (once because I dropped it 6 feet) and in its present state it works better than when new. The Walking With Lions series is an exception as it was done with a 24-120 f/4 AF-S G. Most of the landscapes were shot with the 24-120 as well, including the pano. A few landscapes were done with a 20mm f/2.8, mostly used on the day at Tsitsikamma. For the wine country trip I used a 28mm f/1.8, mainly for its good low light performance in dark wine cellars.
For me the wildlife subjects are a new thing and I am very pleased at how well the images have been received.