American bullfrog:
This very large frog –3-6 inches in body length—must live in permanent water, as it takes 1 ½ years to progress from egg to completed tadpole metamorphosis. Eggs are laid in the summer. To hear the bullfrog’s call go to http://mdc.mo.gov/discover-nature/field-guide/american-bullfrog.
Photo courtesy of Missouri Department of Conservation