Mario may have been abandoned by his mother at just a few weeks old, but he is now being well-looked after by his new family.
The mongoose has found comfort with a bunch of friendly meerkats, but spends most nights being looked after by Centre Manager Craig Wesson at the Kirkleatham Owl Centre near Redcar.
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Callum Young, who will now be 23, was last seen on August 27 last year at his home in Hylton Road.
Gunner Paul Ferguson was on leave from the Army when he died in the early hours of Sunday August 21.
Dutch International Darryl Janmaat left for Watford, USA's DeAndre Yedlin arrived from Spurs and Tim Krul left for a season's loan at Ajax.