When could baby bunnies eat grass?

Rabbits do not eat grass when they are babies. Newborn bunnies are called kits, and they exclusively drink milk from their mothers for the first several weeks of life. Their digestive system is not fully developed, and they are not able to properly digest plant material.

The transition to eating solid foods begins gradually starting at around three to four weeks of age. During this time known as the weaning process, kits will start nibbling on hay and other plant matter, while still relying heavily on their mother's milk. The rate at which they switch to a plant-based diet varies and can depend on individual rabbits and the availability of suitable food.

Typically, by around six to eight weeks of age, rabbits will have fully transitioned to a diet consisting primarily of hay, fresh leafy greens, and other plant materials. Rabbits are hindgut fermenters, meaning they have a specific digestive system that allows them to break down plant matter through microbial fermentation in their cecum and colon.