Second Stamp Frog Devlopement Part 3

I then started to work to the back leg of the frog. I made a cylinder and when to systems and used the bone tool I then made some bones and then had to add the bones to the cylinder but for that I had to on Ik solvers then HI solve so the bones will move in to place when I wanted them to bend. To add the bones to the cylinder I had to use the skin modifier. When I bend the cylinder some parts of it did not look right so I had to use the edit poly and collapse some polygons.