I usually feed one cup of vegetables per piggy in the morning and one at night. They love it!! it is very healthy to provide vegetables to your cavies because they are a source of vitamin C and minerals to your cavy(s), but PLEASE always provide an adequate amount of veggies, if you feed excessive amounts of vegetables to your cavy it can give them diarrhea remember they are very delicate small furry animals and they need proper and fragile care.