Product Details Preserved bullfrogs are commonly used in biology classes as a representative vertebrate, giving students a framework to understand the anatomy of higher vertebrates. The large size of the bullfrog allows students to easily find and explore anatomical structures. This dissection is also easier and safe for students as they only need dissecting scissors, requiring no prior dissection experience. And it's convenient for you; if time is limited, the dissection can be completed in a single class period. Product Features Size, 6"+. Double injected (red arteries and blue hepatic system) for in-depth study of the arterial and hepatic portal systems. Immersed in Carolina's Perfect Solution® holding fluid, packaged in 1- to 5-gal pails, and sealed with leak-proof, reusable lids. Ideal for long-term storage. Prices listed are for 1 specimen. Carolina's Perfect Solution® Carolina's Perfect Solution® is a proprietary fixative that produces the safest and highest quality specimens on the market. Carolina's Perfect Solution® specimens are safe and nontoxic, produce no dangerous off-gassing, and require no special disposal. The lifelike color and tissue texture allow students to easily identify structures and learn anatomy. Learn More. Gender Ratios External sexual dimorphism is not clearly discernible in frogs or bullfrogs. Therefore, sex cannot be determined without internal examination and, although we make our best effort, we cannot guarantee sex ratios with 100% accuracy.