They are taught by getting them to suck your fingers and then dipping your fingers under the milk so they begin to slurp! Quite a messy business. She also uses a large teat which she immerses in the milk. This calf (the Belgium Blue) was rapidly named Jaws as he was keen to chew everything including my arm.
In fact they are pretty keen to chew anything!
I have a feeling however that Jaws will be my favourite!