We typically have two options when it comes to the composition of wildlife.  Either we photograph the animal showing it in its environment as part of the landscape or we photograph the animal filling the frame. In the first case, the animal can be relatively small in the image. Compose the image as you would a landscape image. The animal needs to be placed in a strong position. The rule of thirds is a good place to start. Make sure that the animal has space to walk or look into. This means that there should be more space behind the animal than in front of the animal.

          In the second case, the animal is the main thing. We fill the frame with the animal. We can even go closer and photograph only parts of the animal. The secret here is that the frame needs to be filled. Once again, have space for the animal to move or look into. Try to establish eye contact with the animal. Get action if possible. Shoot from eye level (the animal's eye level) if possible.

          Either shoot option one or option two as in between options don't tend to work for wildlife photographs.