Why Art Nouveau is the natural pairing
Art Nouveau is built on radial and curvilinear forms — hair-like flourishes spiraling out from central points. The Abyssinian coat is literally that pattern, biologically. The portrait borrows from the style's vocabulary to render each rosette as the small composition it is, rather than smoothing them into a single coat texture. The result reads as ornamented without being decorative.
Rosette count and placement matter
Show-quality Abyssinians have eight to ten symmetric rosettes; pet Abyssinians vary widely — fewer, asymmetric, sometimes a single dramatic whorl on the rear. We read which rosettes your cavy actually has and where they sit, then paints them exactly. Two Abyssinian portraits will look meaningfully different because two Abyssinians look meaningfully different.
Color carries through rosettes
Abyssinians come in agouti, self, brindle, tortoise, and roan. The rosette pattern interacts with coat color — an agouti rosette spirals out shimmering bands of color, while a tortoiseshell rosette can be a small ring of two contrasting tones. Watercolor and Garden render this well. Library handles it formally; the wild coat occasionally fights formal settings more than it complements them.