The French Lop is one of the largest domestic rabbit breeds, regularly weighing between ten and fifteen pounds at maturity. That substantial body mass means their caloric and fiber requirements are significantly higher than those of dwarf or medium-sized breeds. A diet built around unlimited grass hay should form the cornerstone of every French Lop's nutrition plan, supplying the long-strand fiber essential for healthy gut motility and proper dental wear.
Because of their size, French Lops are prone to obesity if overfed energy-dense foods. Pellets, fresh vegetables, and treats all need to be portioned with care. A sedentary French Lop that free-feeds on pellets can develop fatty liver disease, sore hocks from excess weight, and gastrointestinal stasis — all of which are far easier to prevent than to treat.
Calcium balance is another key concern. Rabbits metabolize calcium differently from most mammals, excreting excess calcium through the kidneys. Diets too high in calcium can lead to bladite sludge and painful urinary stones. Selecting hay, greens, and pellets with appropriate calcium-to-phosphorus ratios helps protect the urinary tract over the long term.
French Lops also have large, heavy ears that can restrict airflow and trap moisture, making them slightly more susceptible to ear infections. While diet alone won't prevent ear issues, a nutrient-rich diet that supports immune function gives the rabbit a stronger baseline to fight off secondary infections.