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Suddenly, the wolf started panting and moaning loudly like a bitch in heat, while his cock flexed rapidly, shooting ropes after ropes of cum.
His internal muscles clenching made you cum as well. You kept filling the wolf's belly until it started swelling up, making him look pregnant.
The extreme pressure within his cum filled ass, and his loosened asshole, pushed your knot out of him with a loud squelch.
As the cum kept spilling out of his ass down on your knot, he kept cumming with no end in sight.