Cao da Serra d'Aires appear to be very rare. Only 40 in France.
FCI'S CLASSIFICATION : Group 1 Sheepdogs and Cattle Dogs.
COAT : Very long, smooth or slightly wavy, forming long beards, moustache and eyebrows, but not covering the eyes. HAIR : The colours are yellow, chestnut, grey, fawn and wolf grey, with shadings from light to ordinary and dark, and black, more or less marked with tan with or without mixed white hairs, but never with white patches, except a small patch on the chest; hair very long on the head, body and legs, including between the toes. Hair of medium thickness and of goat like texture; dense and evenly distributed all over the body; there is no undercoat or wool. SIZE : Males 45 to 55 cm, bitches 42 to 52 cm. WEIGHT : 12 to 18 kg.
Standard FCI No 93 / 27.02.1996/ F