Degus have a uniquely sensitive metabolism that sets them apart from most other small mammals. They are highly prone to diabetes, which means their diet must be extremely low in sugar — including the natural sugars found in many fruits and commercial treats marketed to rodents. A proper degu diet centers on high-fiber, low-sugar foods that mirror the tough grasses and shrubs they consume in the arid scrublands of central Chile.
The foundation of a degu's daily intake should be high-quality grass hay, which provides essential fiber for digestive health and helps wear down their continuously growing teeth. Timothy hay is widely regarded as the gold standard, though orchard grass and meadow hay also work well as staples or variety options. Hay should be available at all times and should make up the majority of their overall diet.
In addition to hay, degus require a formulated pellet food specifically designed for their species or, at minimum, for chinchillas, which share similar dietary restrictions. Pellets intended for rats, hamsters, or guinea pigs are generally unsuitable because they often contain molasses, dried fruit, or other sugar sources. A good pellet should list timothy hay or grass meal as the first ingredient and contain no added sugars, honey, or artificial colorings.
Fresh vegetables offered in small amounts round out the diet. Safe options include leafy greens like dandelion leaves, herbs such as parsley and basil, and small portions of broccoli or bell pepper. These provide vitamins and minerals that pellets and hay alone may not fully cover, and they add dietary variety that keeps degus mentally engaged at mealtime.