Gunnersaurus Rex is the Arsenal Football Club Mascot. Acording to Arsenal FC websites Gunnersaurus Rex was born in North Bank, Highbury, August 1993. His first debut was on Arsenal vs Coventry City (h) League, in August 14, 1993.
Why is the arsenal mascot Gunnersaurus? The nickname for Arsenal is the Gunners. The 'saurus' part was made up so they can have a dinosaur like mascot.