The observational sketch was done in ink. One of my few urban sketches. The grandeur of the entire cathedral was too large for me to capture in my drawing but here's a little of what I did.
The American bullfrog, Lithobates catesbeianus. A tadpole and an adult. The species is a highly adaptable generalist and it has been introduced to all continents. More like this on: https://www.instagram.com/camilojulianc/