Dog Fever Sterling Silver American Staffordshire / Pitbull Muzzle Necklace. DFPEN00001. This sterling silver muzzle necklace features the iconic American Staffordshire / Pitbull. Perfect for owners and lovers of the breeds. A symbol of devotion to your favourite four-legged friend! This unique piece of jewellery has been completely designed and handmade by Dog Fever’s team of jewellers and miniaturists in Italy. This necklace comes beautifully packaged in a unique Dog Fever presentation box.