All very nice Marie, doesn't look like its outside your comfort zone
The second one is something i had in mind (a slightly longer crop tho), but I've never had the chance. Id like to see it in B&W.
The B&W one you have is very nice, possibly a little too much definition or sharpening, not sure without seeing it toned down a little. You need to keep the wonderful texture you have brought out.
The last I'm less keen on, nice detail again but the crop isn't as appealing as the others.
I do love B&W animal pictures, elephants, lions and gorillas mainly. They just suit B&W.