The American Teddy Guinea Pig represents the teddy coat variety as developed and standardized primarily through North American breeding programs. The "American" designation distinguishes this variety from the Swiss Teddy, which was developed separately in European breeding programs and displays subtle coat texture differences. Both varieties share the fundamental teddy gene mutation producing dense, upright fur, but selective breeding has created recognizable distinctions.
Within North American cavy registries, the American Teddy is often simply called "Teddy," with the geographic prefix used primarily when distinguishing from Swiss Teddy lines or in international contexts. The American Cavy Breeders Association (ACBA) recognizes the Teddy as a distinct breed with established show standards governing coat characteristics and conformation.
The teddy mutation produces a characteristic kinked hair shaft causing fur to stand upright with a springy, elastic quality. American Teddies typically display a slightly shorter, somewhat coarser coat texture compared to Swiss Teddies, though both varieties create the appealing plush appearance that gives the breed its name.

