£100 for a 'castration'!!!???....................don't go back to that vet!
'Castration' is pretty much guaranteed to work, mate!
Are you certain your vet didn't mean 'vasectomised'? Castration involves the complete removal of the testicles, so if it's done even halfway competently there's absolutely no chance of failure.......................you did make certain your vet can count to 'two', didn't you?
This is ferretmaniac here. Yea he just snipped the tubes to the testicles. Didnt remove though hole sherbang becuase then he wouldnt even do any service!