[shep53]

Not uncommon  the cord is designed to tear and seal its self as the lamb falls of move's  away , then when the mother is licking she sometimes gets carried away and bites and pulls  which can result in bleeding or a tiny cord or even intestines out . A length of knitting wool or similar tied around stops the bleeding and if quickly taken to a vet the intestines can be put back succesfully

[Womble]

That's a good tip re the knitting wool Shep53 - I'll put some in our lambing kit.

The other good news is..... drumroll..... after five days, or approximately 12,000% longer than normal  , she's finally figured out what tits are for!! 

[twizzel]

Might it have been over-zealous cleaning by the mother?  Ex-BH had a cow once was nearly on the way to eviscerating its calf...

We had a cow once who was too keen cleaning the calf and by the morning it was dead- concluded it had bled out from the navel