Bullfrogs can grow quite large. Most will grow to be 4-8". I would recommend a final tank size of 55-100 us gallons for an adult. My Bully is 5+" now and a 75 just fits him. They like land with a pond. They love to swim.

Be careful with a home without a lid because they can jump 3-6ft without difficulty . One time I was cleaning his tank and had the lid off and he jumped out of his old 55 and onto my couch. Whoopsie! I also have clips on the screen lid sides. They are strong .

Yes, they eat well .