Wildlife photographers' challenges are many: know a species, be there, avoid disturbing the species, use the right equipment, and prepare for failure. In my case, failure is simply avoided by taking several photos, but you can't always use such a low-effort solution.
Sometimes you have to go to great lengths to get the right photograph - like going to Vietnam.
I encourage you to experience beautiful frog photos by clicking here.
Additionally, if you have any wildlife photos you feel the whole world needs to see, send them to me at halla(at)southwestern.edu and I'll see what I can do for you.