In 1971, scientists moved just five pairs of Italian wall lizards onto a small Croatian island; 36 years later their descendants had larger heads, stronger bites and altered digestive tracts suited to eating far more vegetation than the original population
In 1971, researchers moved 10 wall lizards onto a small Croatian island — 36 years later, their descendants had stronger bites and a plant-heavy diet, with valves in their intestines that the scientists could not find in the population on their original island.