Which of the following is NOT a marked variety of cavies?

Brindle is not considered a marked variety of cavies. In the context of cavy color varieties, marked varieties refer to those with specific patterns or distinct color markings that stand out against a primary color. The Himalayan variety, for instance, is characterized by its color points similar to the Siamese cat, where the body is lighter with darker extremities. Tortoise Shell and Dalmation varieties also have unique markings—Tortoiseshell exhibits a blend of black and orange patches, while the Dalmation displays a white coat with distinct black or colored spots.

Brindle, on the other hand, describes a coat pattern where the color appears as streaks or stripes, blending rather than contrasting as seen in marked varieties. This characteristic does not fit the criteria for marked varieties, which typically have more defined patterns, making the distinction important for identification and judging in shows.