We just bought my MIL a 6 week old teacup chihuahua. Her breeder was feeding her Royal Canin, Little Cesar wet food and a mixture of human baby rice cereal plus water. I want to get her off all this and on to a good food. HELP! She is so tiny she can't chew kibble any bigger than the Royal Canin. Is there a good quality food out there she can eat? MIL has also been mixing boiled dark meat chicken with her food.