sentence: Bullfrogs are either brown or green.
sentences_before: Bullfrogs can reach a length of . Females are larger than males. Bullfrogs can weigh up to .
sentences_after: 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. Males also have bigger tympanic membranes which cover their ears.
concept_name: bullfrog
headings: Bullfrog Adults
categories: Frogs Symbols of Oklahoma