My 3 year old Spaniel does not eat anything without Rotis ,like if we mixed roti with chicken ,curd , veggies etc he will eat quickly but if we give same kind with rice or other food he will not eat I just read somewhere that flour has glutin which is not good for dogs health is it true and if yes how to give other food to my dog so that he can eat happily and if any specific home food suggestion which is good for his health pls suggest and share your inputs thanks