Hill's Prescription Diets (most available in multiple sizes of dry as well as individual and cases of canned):

• I/D (regular and low fat)
• A/D
• C/D
• K/D
• R/D
• W/D
• H/D
• U/D
• D/D
• T/D
• J/D
• M/D
• Y/D

Hill's Science Diets:

Feline

• Kitten (under 1-year-old)- Healthy Development
• Adult (1-6 years)- Optimal Care, also available in Ocean fish and Rice recipie
• Mature Adult (7-13 years)- Active Longevity
• Senior (14+ years)- Age Defying

Canine

• Small and Toy Breed- foods for all life stages, with specificaly tailored nutrition for small and toy breeds, in small bites as well as a variety of canned foods 
• Healthy Development- puppy, also available in Lamb and Rice formula
• Advanced Fitness- Adult small bites, also in Lamb and Rice formula
• Healthy Advantage- puppy, large breed puppy, and adult