Browse all men's sponge fleece zip-up hoodies from Zoo&co's Artist Shop

• Fantastic alien creatures featured in the Universal Encyclopedia of Doodles

• Black and white funny doodles art in a crazy pattern

• Two mad fighting dragons engage in furious combat

• Frogs in love performing an audacious French kiss

• A couple of anglerfish falling in love in a romantic encounter

• Proud Saint Patrick's Day Leprechaun waving an Irish flag

• Mischievous Leprechaun running away with a mug of beer

• Mischievous St Paddy's Day Leprechaun keeping balance while holding a mug of beer on his head

• Talented St Paddy's Day Leprechaun juggling mugs of beer

• Green Leprechaun throwing away his mug of beer while celebrating Saint Patrick's Day

• Smiling Irish Leprechaun drinking a toast for Saint Patrick

• Irish St Paddy's Day Leprechaun singing and dancing