The Best Can Rabbits Eat Guonea Pig Food References. Guinea pigs have a different digestive system from rabbits, and this means that the ingredients in a rabbit’s food will not be as easily digested as those in a guinea pig’s. Dont top the bowl up as this may decrease the amount of hay andor grass they eat.

Called probiotics these bacteria will help to promote proper digestion. Rabbits can produce their own vitamin c and in turn, don’t need to supplement their diets with extra sources. Therefore, excess vitamin c cannot harm guinea pigs but can hurt rabbits.