Thanks for the help sofar.
Unfortunately the firewall here prohibits uploading of pictures, so uploading is a bit of a problem
I'm quite inexperienced in photography and only recently brough my first proper camera, a Nikon D40, with a Nikkor 50 mm F1.8D lens.
Most of my pictures were taken in bright daylight and mostly used a low ISO.
The trouble seems to be around framing and the background, the animals seem to blend into the picture and not stand out. Most of the photos were taken from the car as we were not allowed to leave the vehicle.