sentence: Males also have bigger tympanic membranes which cover their ears.
sentences_before: Bullfrogs are either brown or green. They also have darker spots on their back. Bullfrogs have webbed feet for swimming. They can leap up to . Male bullfrogs can be heard roaring when mating with a female.
sentences_after: Bullfrogs have brown or gold eyes. They also have broad flat heads and bodies. The mouth of a bullfrog are small and have tiny teeth inside.
concept_name: male
headings: Bullfrog Adults
categories: Frogs Symbols of Oklahoma