An animal spine brace is described. In one or more implementations, a brace is comprised of an upper panel and a lower panel that extends from the upper panel. The lower panel is configured to be releasably secured to the upper panel to form a sleeve around an animal. The upper and lower panels may be made of a breathable material that is configured to stretch, wick moisture from the animal, and/or control odor. Additionally, both the upper panel and lower panel are configured to include supportive stays, which may be arranged on a respective panel to fan out.