Missing Ben Clarkson's girlfriend Rachel Peatfield said she moved between optimism and despair as the search for her childhood sweetheart entered its third week.
"Some days you have up days, where you think someone will see his poster and come forward," she said. "Other days you feel completely down and think, 'what's the point? Am I ever going to see him again?'"
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The sheep were marked with red across their shoulders, which may now have faded.
Middlesbrough have announced academy player Anthony Renton has been diagnosed with leukaemia.
Tyne and Wear Fire and Rescue Service also attended to put out a fire that had been started at the property.