Their smooth and glossy coats can be fawn, apricot fawn, silver fawn, or black. The markings are clearly defined and there is a trace of a black line extending from the occiput to the tail. The tail normally curls tightly over the hip.Pugs have two distinct shapes for their ears, 'rose' and 'button'. 'Rose' ears are smaller than the standard style of 'button' ears, and are folded with the front edge against the side of the head. Breeding preference goes to 'button' style ears.Pugs' legs are strong, straight, of moderate length, and are set well under. Pug pregnancies last an average of 63 days. Many responded to the breed's image of anti-functionalism and diminutive size during this period.In paintings and engravings of the 18th and 19th centuries, Pugs usually appear with longer legs and noses than today, and sometimes with cropped ears.