Thanks for those interesting comments! I wonder if the rabbits and pigs knew there was something extra good in the comfrey for them. Some other readers have warned that comfrey will grow rampantly; I agree though that the pig solution may be hard to handle for many gardeners these days!
passed times, I have found that mothers' breast milk is unsurpassed at preventing or clearing up diaper rash. Just a little squirt at diaper change, and the baby will never experience diaper rash at all.