Frogfoot is also a Sukoi. (Сухой). Both the Su-24 and Su-25 (Fencer and Frogfoot respectively) are getting pretty long in the tooth, although the Frogfoot is not as old a design as the US A-10.
The Frog, like the Hog, are both designed to do one thing, and one thing well. Kill armor.
Saw them both at an air show once.