Great froggie picture! Nice lighting and good detail, composition and DOF. Would have preferred not to have that dead leaf on his back but I don't think he would havae patiently continued to pose while you removed it ;-)
Wonderful color and clarity to this photograph. Lots of great detail in this to study. The angle of the frog does lead the viewer out of the frame a bit.
There's just something abou a frog... I really enjoy seeing the reflections made by the surface tension around things in the water (frogs, stones, twigs, etc.) Please colors and a lovely moment.