Manna Pro has three rabbit formulas: PRO, GRO, and SHO. The GRO has 18% protein but both the PRO and SHO have the same levels, 16%. The show is more of a simple maintenance feed like any ordinary rabbit pellet... it doesn't have the added prebiotics, probiotics and digestive enzymes like the SHO formula does. Sho also has 1% more fat for better fur condition and a little higher fiber for better gut health, IMO.