Attempted Drowning.

This morning I took Rafi to the dog swimming pool again. We arrived just in time for our session, having been stuck behind a slow moving vehicle all the way there.
This is Rafi's second session and he remembered it very well hardly waiting for me to take his harness off and give him a shower. Once he was in he swam brilliantly. jumping from the side and walking down the steps, all to fetch his turtle toy.
Then in comes a golden retriever puppy with only one thought on its mind..... Dum Dum Duuummmm!! Murder!
Whilst Rafi was swimming the retriever lept off the side of the pool straight on to Rafi, it then twice tried to climb onto his back  pushing poor Rafi right under the water. It was decided to get the retriever out to let Rafi have one more swim before we got out for the end of our session.
Please note:
 1)Rafi was unharmed and unphased by the events.
2) The retriever was not being nasty it merely wanted to play, but was twice the size of Rafi.
3) I was very traumatised by the whole situation, my poor Rafi!!