What is the term for a coat pattern characterized by dark vertical stripes resembling zebra stripes?

The term that describes a coat pattern characterized by dark vertical stripes resembling zebra stripes is "brindle." This pattern typically features a mix of dark and light hairs, with the darker hairs creating a striped effect along the body of the horse. Brindle patterns can vary in intensity and coloration but are distinctive in their resemblance to zebra stripes.

The other terms listed refer to different coat patterns: "piebald" refers to a coat with large patches of black and white, typically seen in horses; "tovero" describes a specific type of pinto pattern, where the horse has a combination of white and colored areas with certain distinct characteristics; and "spotted" generally refers to coats that have distinct spots or patches, often seen in appaloosa horses or other breeds. Each of these terms reflects different coat markings, making them distinct from the brindle pattern.