Fox howling like a wolf

Last night on Denmark Hill, just past the "Fox on the Hill" pub, three of us first saw a fox then heard it howl like a wolf, something I've never heard a fox do before. Having watched the wonderful snow wolf documentary the night before I was very struck by how eerily wolf-like this cry was. It wasn't at all like the disturbing 'banshee call' of a vixen, but a head thrown-back wolf howl. Bruce Doran at Ask a Scientist says:

"Foxes belong to a group of mammals known as canids, which includes wolves, coyotes, jackals, and dogs. Like all canids, foxes can bark, growl, yelp, and howl. They produce these sounds whenever they're attracting mates (howls), during territorial disputes (growls), warning pups of danger (barks), or pups having fun with other members of their family (yelps)."   http://www.cool-science.ca/article/3548

Don't believe the myriad sites that claim foxes can't or don't howl, we heard it!

View from the flat window in Denmark Hill towards the fireworks on the South Bank, they were really beautiful, at one point the sky was filled with Poppies of red light for the First World War anniversary,  thank you to our gracious host for sharing this view !