Breeding runts, which are rabbits that are significantly smaller or weaker than their littermates, is generally not recommended. Runts often have underlying health issues or genetic factors that contribute to their small size or weak condition. Breeding runts can perpetuate these genetic traits and increase the likelihood of health problems in future generations.

Breeding should ideally be done with healthy, well-developed rabbits that exhibit good growth, vigor, and overall health. By selectively breeding rabbits with desirable traits and avoiding breeding from runts or rabbits with known health issues, you can help improve the overall quality and health of the offspring.

If you have a runt in a litter, it's important to provide extra care and attention to ensure its well-being. This includes monitoring its growth, providing proper nutrition, and consulting with a veterinarian if you have any concerns about its health. However, it's generally not recommended to specifically breed runts or intentionally select them for breeding purposes.

Always remember that responsible breeding practices prioritize the health and welfare of the rabbits involved, aiming to produce strong and healthy offspring. Consulting with a rabbit-savvy veterinarian or experienced breeder can provide further guidance and support in making breeding decisions.