Holy swimming cow - Batman

The farmer (in the overalls) was driving his small herd along the towpath when a passer by with a dog spooked them and one jumped in the canal.
A lot of arm-waving ensued accompanied by lots of advice from other passers-by, boaters and the like.
The cow eventually climbed out of the water at the flume by the lock and sauntered off into its field.
I thought canal holidays were supposed to be tranquil.