Pacific pocket mouse or capybara: which rodent adaptation is more impressive?

A full-grown Pacific pocket mouse is the size of a human thumb and weighs less than three nickels, making it one of North America's smallest mammals. On the other end of the scale, the capybara is the world's largest rodent, semi-aquatic and perfectly adapted for life near the water. Which extreme rodent size do you find more remarkable? Source: San Diego Zoo Wildlife Alliance, August 27, 2026. Original editorial visuals.