This blood blister is actually the amniotic fluid bag that wraps the kitten. Because it is stained red with blood about to give birth, it looks like a blood blister. The owner does not need to worry and do not burst the blood blister, because the female cat will handle it by herself. At this time, it should be Stay quietly next to the female cat and accompany her in giving birth. The female cat should keep no strangers around her when she is giving birth to prevent her emotional stress from affecting the birth.