I advise you to have a look for these excellent Papers:
1- Animal models in type 2 diabetes research: An overview. BY: K. Srinivasan & P. Ramarao
2- Treatment of high fat diet induced type 2 diabetes in C57BL/6J mice by two medicinal plants used in traditional treatment of diabetes in the east of Algeria.
3- A novel model of type 2 diabetes mellitus based on obesity induced by high-fat diet in BDF1 mice