Strange vocalizations heard in the Markdale area witnessed in Ontario, Canada

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Visiting my mother's old house located on a 100-acre maple wood lot between Markdale and the Beaver Valley in South-Western Ontario. Surrounding area is a mixture of fields and large expanses of wood lots. It was late in the evening on a warm day - perhaps around 11 p.m. A clear night with no wind. My mother's ex-common-law huband called me outside with him however I don't recall if it was to hear the sounds or to have a drink with him. In any case we were outside and listening to what I can only describe as an animal "screaming" a long way in the distance. The screams were certainly not human and not close to our location. I would guess the animal making the sounds was a good mile or two from our location but that's only a guess. At times we straigned to hear the sound. I say not human as neither of us at any time considered them to be human. My mother's ex is an accomplished outdoorsman who has participated in a month long wildness course in B.C. He has spent much time in the outdoor...