I managed to focus on the animals behind the wire mesh but as you can see the mesh can be seen in the picture just out of focus. Is it possible to have the mesh out of the picture totally? Do you need say to PS it out were you to do it?
It's not possible unfortunately. Unless you can get your lens right up to and shoot in between the openings in the mesh. That's why I don't shoot if I see the animals in cages.
Set your lens on a longer focal length, and use a wider lens aperture setting, stick your lens right up to the wire mesh holes, the wire mesh will be out of focus.