sonny is 2yra old apx and has had diarriah since i got him apx 2 months ago. My neighbor used to work 4 a vets office and she said maybe the last owner had him on not such good food so for quite awhile i had him on my neighbors cat food she orders online(dont know name) then she stopped giving it to me so i bought purina sensitive systems and that helped with his fur(above his back legs) he was losing some fur but anyhow then my kitten 7months was vmoiting every now and then some of the food wasnt even digested so i figured because i was so worried about sonny diarriah i forgot that cutie need kitten food so i wanted to get kitten food(natures variety for all life stages) for her and been mixing the two together she has vomited since ive started doin that shes also had blood in her stool(small quanities)