Thanks for the link Tinyplanets.
I've seen many dogs, especially labradors(!) having a great time splashing in the rivers. As we know, they are natural water-loving dogs, complimented by their webbed feet and otter tail which aid their buoyancy and ability in water. Yet at times like many breeds, they gulp large amounts of water when retrieving (whatever their owners have thrown) from the rivers. At times 'coughing' on the river banks whilst proudly presenting their 'prize'!
It's good to hear Muffin was okay, oh how they frighten us at times!