Your baby rabbit has just died it had a crusty nose and it was getting quite messy on its rear end it had not been eating very well and you had only had it for 4 days?

I'm so sorry to hear about your baby rabbit. The symptoms you described, such as a crusty nose and messy rear end, could indicate a serious health issue, possibly related to infections or digestive problems. It's important to consult with a veterinarian if you notice similar symptoms in future pets, as they can provide the necessary care and guidance for their well-being. Losing a pet, no matter how short the time, can be very heartbreaking.