“When I was photographing this Budgett’s frog (Lepidobatrachus laevis), I turned to the staff and asked, "Holy cow, is the frog making that noise?! That sounds like a mad cat. ” – JoelSartore, #NatGeoExplorer and founder of the #PhotoArk “These frogs mean business. He was really showing us how tough he was, standing up on all fours, growling. Be wary! He'll draw blood with that one tooth.” – This species was documented by Sartore at the National Aquarium in Baltimore, Maryland. Photo Ark uses the power of photography to inspire people to learn about the captivating lives and remarkable behaviors of weird and wonderful wildlife — and to take action to safeguard them from growing threats.