Rats thrive with variety in their diet, as long as they contain all food groups. Commercial rat nuggets are formulated to contain all the nutrients that rats need. Nuggets are also designed to prevent selective feeding, which is common in muesli diets, where the rats eat only what they like and leave out the rest, increasing the risk for nutrient deficiencies.

When bringing home a new pet rat, continue to feed the same type of food given at the breeder or pet store. You may choose to switch your pet's diet, introducing the new food gradually over a period of 7-10 days to avoid digestive upsets.

Pet rats can also be given cooked chicken scraps, cooked egg, and fresh fruits and vegetables that are washed thoroughly. These are additional sources of essential nutrients for rats. Treats should be given in moderation to prevent stomach upsets and weight gain. 

Know more about your pet's nutritional needs by consulting your San Rafael, CA veterinary clinic. Visit this website for more pet care tips.