[cypher]

So sorry to hear this, it must have been such a shock & so sad to lose your little Humphrey so unexpectedly.
There really isn't any way to tell for sure what might have happened, but try not to blame yourself, I know it's hard not to think we might have done something differently but even if something is wrong hams can be very good at hiding signs of illness & if he appeared well & active previously then there really is nothing you could have done differently.