Hissing swans

This family of swans have the entire waterway of Holland to swim in. However they felt it necessary to swim right up to the property to make a fuss of the dog who was going about his business without a look in their direction. What you can't see is the other adult swan who had puffed himself twice the size, and was busy furiously flapping his feet in the water and pushing his chest against the side of the waterway, hissing and biting the pavers.