sometimes u have to foster the babies to another mom rabbit. if u don't have a foster mom, try to bottle feed them with goats or cows milk. not just regular milk. DO NOT use kitten milk replacment.

Runts usually are born that way. Mothers instinctively know they don't have a good chance. You could try to feed it yourself to supplement her feedings. But I wouldn't try to foster it as she will probably reject and even kill a strange runt. For feeding or orphaning: Use Meyenberg Regular Goat milk (found at Safeway in the milk section or Whole Foods) or KMR KITTEN powder formula + follow directions on the can. (KMR better for domestics). It may be easiest to start with a 3 cc/ml syringe or an eyedropper. Some use pet nurser nipples on the end of a luer lock syringe, or a teat cannula on the end of a syringe. Feed only with the bunny sitting UPRIGHT, and point syringe down towards bottom or side of mouth, so if too much comes out, the baby does not aspirate! For those who are slow to learn nursing, SC fluids may be necessary to prevent electrolyte imbalance or dehydration (check with a vet on this only!!). Domestic buns with closed eyes should be fed 2 x a day, and the number of feedings gradually decreased until they are weaned. If their eyes are still closed, you need to stimulate their bottoms with a warm moist towel after feedings to help them to pee. (Domestics are weaned about 6 weeks; wild bunnies are weaned about 3-4 weeks for cottontails and 9 weeks for jacks). Bloat is commonly associated with too frequent feedings and too much at one time.